Paint.NET 4.1.5

- Improves reliability of saving.
- Further improves Copy/Paste functionality.
- Fixes some other miscellaneous bugs.
- Saving an image is now fault-tolerant. If there is an error or crash while saving, the original file will be left alone.
- Worked around a bug in some plugins that are incorrectly using the built-in Gaussian Blur effect. For example, Sharpen+. Now they won't crash.
- Fixed a bug with Edit->Paste into New Image, where the new image would be 1 pixel too wide or tall.
- Fixed a bug with the Rectangle Select tool and Fixed Ratio selection, which would be off by 1 pixel.
- When pasting an image from Paint.NET into Paint.NET, it will be a little smarter about where it puts the image. Previously, if the location wasn't within the viewport, it would be placed at the top-left corner of the viewport. Now it will find the nearest point along the edge of the viewport to place the image.
- The EXIF rotation ("orientation") metadata is now discarded when opening an image, which was causing aggravation with images that could then never be reoriented correctly using Image->Rotate
- The EXIF metadata for JPEG thumbnail data are now correctly discarded.
- Fixed a potential memory leak in the Gaussian Blur effect.
- Fixed a typo in the Italian translation. In the setup wizard it was referring to "Pain.NET"

- fixes several issues related to copy-paste.
- improves performance and quality for a few adjustments.
- fixes a data loss bug.

* Reduced download size from 4.8MB down to 3.5MB.

- Updated to use (and require) the .NET Framework v4.0.
- Fixed a small error in the Chinese translation.

- Fixed the bug where saving as 8-bit PNG/GIF/BMP wasn’t always working. This often happened when “Auto” bit-depth was selected, and based on the color complexity of the image it would choose 8-bit (for a smaller file-size) and then fail with “error”. Usually this only happened with larger images.
- Improved performance of Gaussian Blur by 30-40% depending on your CPU (Intel Core i7 seems to show the best improvement).
- Improved performance of all the layer blend modes by 15-30%, depending on your CPU (Intel Atom seems to show the best improvement).
- Improved performance of zooming with the mouse wheel on dual-core Intel Atom systems.

* Improved performance of the Image->Flatten command by making it multithreaded.
* Fixed the File->Save As dialog not opening to the correct folder.
* Fixed a crash with certain plugins and their use of the File Open dialog.
* Fixed a very rare crash with the toolbar’s font list.

* Fixed DirectDraw Surface (.dds) file format support for CPUs which do not have SSE2 (Pentium III, Athlon XP).
* Fixed an issue with the File->Save dialog related to file type plugins that were only written for opening (importing).
* Fixed some crashes which were supposed to be "out of memory" errors.
* Fixed a race condition with the New Image, Canvas Size, and Resize dialogs. If you typed extremely fast you could cause a crash by typing a negative number and immediately pressing OK or Enter.
* Fixed a File->Save dialog issue in Win7/Vista where it could ask you about overwriting the wrong file.

* Fixed a mismatched file name issue with the File->Save dialog in Win7/Vista. This issue is still present on XP but cannot be fixed.
* Fixed DirectDraw Surface (.DDS) file format support for CPUs which do not have SSE2 (Pentium III, Athlon XP).
* Fixed some crashes which were actually supposed to be "out of memory" error dialogs (without a crash!).
* Fixed a race condition with the New Image, Resize, and Canvas Size dialogs. If you typed very very fast you could get it to crash by typing a negative value and immediately pressing OK or Enter.
* Removed splash screen.

* All font face variants (e.g., Arial vs. Arial Narrow) are now available with the Text tool in Win7/Vista with DirectWrite.
* Bitmap font types (e.g. Courier, Terminal, Fixedsys) are now available with the Text tool in Win7/Vista.
* Fixed some bad text kerning with the Text tool at small font sizes when antialiasing was turned off.
* For the Image->Resize function, the quality, correctness, and performance of Bilinear and Bicubic sampling modes have been improved. Super Sampling also has some performance improvement.
* Improved the rendering quality for the Hue/Saturation adjustment. Also made a new icon for it.
* Fixed many subtle rendering issues with the Move Selected Pixels tool. These were apparent when flipping or rotating a selected area.
* Fixed: The Line/Curve tool was applying pixel snapping to the curve nodes, which caused lines to "bend" when using the Shift key to constrain the angle.
* Fixed some extraneous CPU usage related to unnecessary or redundant thumbnail updates.
* Fixed a few dialogs that looked wrong with Aero glass with Remote Desktop or Virtual PC.
* Fixed a nasty memory leak with Flatten followed by Undo.
* Fixed some issues related to effects that took awhile to cancel. As it turns out, drag-and-drop was enabled at this time, which easily lead to crashes or hangs.
* Some Win7 systems could not detect that .NET 3.5 SP1 was installed, even though it was. A fallback detection function has been added.
* For plugin authors, the Effect class now has a pollable IsCancelRequested property. This can be used to improve responsiveness for expensive OnSetRenderInfo() implementations which are otherwise non-interruptible.
* For plugin authors, the Surface.FitSurface() method is now optimized to use multiple threads, which improves performance.

* All font face variants (e.g., Arial vs. Arial Narrow) are now available with the Text tool in Win7/Vista with DirectWrite.
* Bitmap font types (e.g. Courier, Terminal, Fixedsys) are now available with the Text tool in Win7/Vista.
* Fixed some bad text kerning with the Text tool at small font sizes when antialiasing was turned off.
* For the Image->Resize function, the quality, correctness, and performance of Bilinear and Bicubic sampling modes have been improved. Super Sampling also has some performance improvement.
* Improved the rendering quality for the Hue/Saturation adjustment. Also made a new icon for it.
* Fixed many subtle rendering issues with the Move Selected Pixels tool. These were apparent when flipping or rotating a selected area.
* Fixed: The Line/Curve tool was applying pixel snapping to the curve nodes, which caused lines to "bend" when using the Shift key to constrain the angle.
* Fixed some extraneous CPU usage related to unnecessary or redundant thumbnail updates.
* Fixed a few dialogs that looked wrong with Aero glass with Remote Desktop or Virtual PC.
* Fixed a nasty memory leak with Flatten followed by Undo.
* Fixed some issues related to effects that took awhile to cancel. As it turns out, drag-and-drop was enabled at this time, which easily lead to crashes or hangs.
* Some Win7 systems could not detect that .NET 3.5 SP1 was installed, even though it was. A fallback detection function has been added.
* For plugin authors, the Effect class now has a pollable IsCancelRequested property. This can be used to improve responsiveness for expensive OnSetRenderInfo() implementations which are otherwise non-interruptible.
* For plugin authors, the Surface.FitSurface() method is now optimized to use multiple threads, which improves performance.

# New: For Windows 7, added taskbar progress reporting for long running operations (effects, adjustments, Image->Resize, save, install)
# Made some corrections to the French translation
# Running setup with /auto will no longer launch Paint.NET when it's done
# Fixed an issue where Paste into New Image would refuse an image on the clipboard, even if regular Paste would take it
# Fixed a race condition with Edit->Paste and Image->Resize whereby it would take up 100% CPU and take between 1 minute to 1 hour to finish
# Fixed an issues with Copy/Paste where it would leave an extra line of transparent pixels on the left, top, right, and/or bottom edges
# Fixed lag with the paintbrush tool that was being seen on some systems
# Fixed some issues with the paintbrush and eraser tool being misaligned when zoomed in
# Fixed a crash that would happen at (seemingly) random times, such as after drawing with the paintbrush tool, on some systems
# Fixed a minor and obscure rendering glitch with the Move Selected Pixels tool
# Fixed an issue with glass over Remote Desktop or Windows 7 Virtual PC
# Fixed a minor glitch whereby the "Unsaved Changes" confirmation dialog could never finish rendering the image thumbnail if one of the Move tools was active

* New: Refreshed user interface with new icons and visual styling. On Windows 7 and Vista, it is enhanced for Aero and "glass".
* New effect: Blurs -> Surface Blur, by Ed Harvey
* New effect: Distort -> Dents, by Ed Harvey
* New effect: Distort -> Crystalize, by Ed Harvey
* New: Russian translation.
* Performance and memory usage have been extensively optimized throughout the entire program.
* .NET Framework 3.5 SP1 is now required, which has many built-in performance improvements.
* Disk space usage has been reduced by about 12MB by using NTFS compression on installation files related to staging (.MSI) and diagnostics (.PDB).
* Compression for .PDN images has been improved.
* Effect dialog responsiveness has been improved.
* Images open much faster, especially on single CPU systems.
* Startup performance on most systems will be better by about 20%.
* Memory usage has been reduced when more than one image is open.
* Rendering quality has been greatly improved when zoomed in.
* The selection outline is no longer animated. Instead of "dancing ants", a context-sensitive "XOR" stipple pattern is drawn. This has allowed for improved performance and lowered CPU consumption (and longer battery life).
* The font manager for the Text tool has been completely rewritten, which fixes many problems seen with crashes and missing fonts.
* On Windows XP, the Text tool has improved reliability and font selection (it uses GDI instead of GDI+).
* On Windows 7, the Text tool will use DirectWrite (instead of GDI) which gives better performance and greatly improved quality. On Windows Vista, you may install DirectX 11 to enable this feature; otherwise GDI will be used.
* The toolbar font list has improved usability, rendering quality, and significantly improved performance.
* The toolbar font list no longer requires an application restart to recognize newly installed fonts.
* When many fonts are installed, both memory usage and startup performance have been greatly improved.
* It is now drastically easier to move a very small selection.
* All installation prerequisites are now installed automatically, such as .NET and Windows Installer.
* Updates are now downloaded in the background, and installed after you exit the application. In previous versions, this was a foreground task and you could not use Paint.NET while the update was downloaded.
* Added a "Utilities" menu. Updates, Languages, and Plugin Errors have been moved there.
* Added a "Manage Fonts" command to the Utilities menu. This will launch the built-in Windows font control panel.
* Clicking the middle mouse button on an image thumbnail will now close the image.
* Improved the Unfocus effect.
* The DirectDraw Surface (.DDS) file type now allows you to select the resampling algorithm for auto-generated mip-maps.
* A processor that supports SSE is now required (almost all CPUs purchased this decade satisfy this).
* Fixed an issue with Gaussian Blur and its treatment of alpha values.
* Fixed a crash with the "Units" selector in the toolbar.
* Fixed a crash due to an overflow that prevented very large images from working (64-bit only).
* Fixed many other miscellaneous glitches and crashes.
* The Korean translation has been removed. Sadly, we were unable to find the resources to complete this.