installer crashing on installation

someone else with this problem before me: forum_thread/756
If anyone had this problem before, but has fixed it, please let me know.

[x86 or x64]x64
[Windows OS]win10 education
[Content] installer chrashes after clicking ok at select language
[error.log exists]yes
[What you did before error]click ok on on the language select screen in the installer
[PPD.ini] i can't find a PPD.ini, because PPD isn't installed yet

i have .NET verion 4.6, so that shouldn't be the problem.
tried both x64 and x86 installers, same result.
i even tried a x64 version of the 0.7 installer, didn't work either.
here is a video of the process: (don't mind the black screen, OBS can't record admin screens)

error.txt:
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08/09/2018 20:31:32
FullName:PPDInstaller, Version=0.9.0.8, Culture=neutral, PublicKeyToken=null
Assembly:C:\Users\Frain_Breezee\Downloads\PPDInstaller_x64\PPDInstaller(x64)\PPDInstaller.exe
Name:PPDInstaller.exe
FileVersion:0.9.0.8
ProductVersion:0.9.0.8
RefAssembly:mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
RefAssembly:System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
RefAssembly:System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
RefAssembly:PPDConfiguration, Version=0.9.0.0, Culture=neutral, PublicKeyToken=null
RefAssembly:ErrorHandle, Version=1.1.2.0, Culture=neutral, PublicKeyToken=null
RefAssembly:System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
RefAssembly:Interop.IWshRuntimeLibrary, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
RefAssembly:ICSharpCode.SharpZipLib, Version=0.86.0.518, Culture=neutral, PublicKeyToken=1b03e6acf1164f73
System.Collections.ListDictionaryInternal

1 is not a supported code page.
Parameter name: codepage
mscorlib
at System.Text.Encoding.GetEncoding(Int32 codepage)
at ICSharpCode.SharpZipLib.Zip.ZipFile.ReadEntries()
at ICSharpCode.SharpZipLib.Zip.ZipFile..ctor(Stream stream)
at ICSharpCode.SharpZipLib.Zip.FastZip.ExtractZip(Stream inputStream, String targetDirectory, Overwrite overwrite, ConfirmOverwriteDelegate confirmDelegate, String fileFilter, String directoryFilter, Boolean restoreDateTime, Boolean isStreamOwner)
at PPDInstaller.Utility.Unzip(String path, String unzippath)
at PPDInstaller.ExtractDialog.<ExtractDialog_Load>b__9_0()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
System.Text.Encoding GetEncoding(Int32)
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作成日時:2018-09-09 03:40:46 更新日時:2018-09-09 21:27:28