I have a fairly simple Haskell program which I build with cabal, which ends up seemingly successful with an executable (apl.exe). (but what a path(!): . \dist-newstyle\build\x86_64-windows\ghc-8.10.1\apl-0.0.1\build\apl\apl.exe Running that gives an error: Program 'apl.exe' failed to run: The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detailAt line:1 char:1 + ./apl + ~~~~~. At line:1 char:1 + ./apl + ~~~~~ + CategoryInfo : ResourceUnavailable: (:) [], ApplicationFailedException + FullyQualifiedErrorId : NativeCommandFailed Looking in the Windows event viewer, it reports: Activation context generation failed for "...\apl.exe". Error in manifest or policy file "...apl.exe" on line 2. Invalid Xml syntax. Sxstrace did not seem to give any additional information: Begin Activation Context Generation. Input Parameter: Flags = 0 ProcessorArchitecture = AMD64 CultureFallBacks = en-US;en ManifestPath = D:\CS\Courses\CS505 -APL\Labs & Hmwks\Dsem Labs -Haskell Solns\dist-newstyle\build\x86_64-windows\ghc-8.10.1\APL-0.0.1\build\APL\apl.exe AssemblyDirectory = D:\CS\Courses\CS505 -APL\Labs & Hmwks\Dsem Labs -Haskell Solns\dist-newstyle\build\x86_64-windows\ghc-8.10.1\APL-0.0.1\build\APL\ Application Config File = ----------------- INFO: Parsing Manifest File D:\CS\Courses\CS505 -APL\Labs & Hmwks\Dsem Labs -Haskell Solns\dist-newstyle\build\x86_64-windows\ghc-8.10.1\APL-0.0.1\build\APL\apl.exe. INFO: Manifest Definition Identity is (null). ERROR: Line 2: XML Syntax error. ERROR: Activation Context generation failed. End Activation Context Generation. Online some posts suggest installing a current VC_redist - I did that, no relief. Any suggestions on what is causing this, and a fix? Running GCH: 8.10.1 Cabal: 3.2.0.0 Windows 10 Dr. Gregory Guthrie