AlexV

Yes, except KB2952664 and KB3035583, the Win 10 Nag-ware updates. Could Paint.NET depend on those being installed?

Thank you for the reply. Unfortunately I have already tried reinstalling and repairing, including PdnRepair. None of the specific error messages or codes mentioned in that thread apply. Installation and uninstallation appear to run successfully, it is only running Paint.NET itself that crashes.

Paint.NET 4.0.6 is showing a message box stating AccessViolationException at every startup. Repair, and uninstall/reinstall have had no effect. The reported error is: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at PaintDotNet.SystemLayer.Native.x64.Direct2D.D2D.CreateFactory(Direct2DFactoryType factoryType, Direct2DFactoryOptions factoryOptions) at PaintDotNet.SystemLayer.Direct2D.CreateFactoryX64(Direct2DFactoryType factoryType, Direct2DFactoryOptions factoryOptions) in d:\src\pdn\paintdotnet\src\SystemLayer\Direct2D.cs:line 71 at PaintDotNet.SystemLayer.Direct2D.CreateFactory(Direct2DFactoryType factoryType, Direct2DFactoryOptions factoryOptions) in d:\src\pdn\paintdotnet\src\SystemLayer\Direct2D.cs:line 86 at PaintDotNet.Direct2D.Direct2DFactory.get_PerThread() in d:\src\pdn\paintdotnet\src\Core\Direct2D\Direct2DFactory.cs:line 70 at PaintDotNet.Controls.Direct2DControlHandler..ctor(IDirect2DControlHost host, FactorySource d2dFactorySource) in d:\src\pdn\paintdotnet\src\Framework\Controls\Direct2DControlHandler.cs:line 242 at PaintDotNet.Controls.Direct2DControl..ctor(FactorySource d2dFactorySource) in d:\src\pdn\paintdotnet\src\Framework\Controls\Direct2DControl.cs:line 137 at PaintDotNet.Dialogs.ExceptionDialog..ctor() in d:\src\pdn\paintdotnet\src\PaintDotNet\Dialogs\ExceptionDialog.cs:line 221 at PaintDotNet.Diagnostics.CrashManager.ShowCrashLogDialog(String crashLogPath) in d:\src\pdn\paintdotnet\src\PaintDotNet\Diagnostics\CrashManager.cs:line 59 at PaintDotNet.Startup.StartPart2(String mutexName, String[] remainingArgs) in d:\src\pdn\paintdotnet\src\PaintDotNet\Startup.cs:line 572 Which suggests an error while trying to display the error. Looking at pdncrash.log then, reveals: Video card: --- Exception while populating videoCardNames: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at PaintDotNet.SystemLayer.Native.x64.Dxgi.Dxgi.CreateFactory1() at PaintDotNet.SystemLayer.Dxgi.CreateFactory1X64() in d:\src\pdn\paintdotnet\src\SystemLayer\Dxgi.cs:line 54 at PaintDotNet.SystemLayer.Dxgi.CreateFactory1() in d:\src\pdn\paintdotnet\src\SystemLayer\Dxgi.cs:line 69 at PaintDotNet.Diagnostics.CrashLog.WriteCrashLog(Exception crashEx, TextWriter stream) in d:\src\pdn\paintdotnet\src\PaintDotNet\Diagnostics\CrashLog.cs:line 360 I don't know how to go any further. Full crash log attached Thanks in advance for any help. Alex pdncrash.3.log.txt