Unhandled Exception for every command

[Valay17]

Reg File Size = 350MB
OS = Win 10 64 Bit
RAM = 16 GB

Using any command gives this

Reading (FileName).reg...

Writing (FileName).reg...

Unhandled Exception: System.InvalidCastException: Specified cast is not valid.
at regis3.RegValueEntry.WriteRegFileFormat(TextWriter output, Dictionary2 replacementLookup) at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup)
at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup) at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup)
at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup) at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup)
at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup) at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup)
at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup) at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup)
at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup) at regis3.RegKeyEntry.WriteRegFileFormat(TextWriter output, RegFileExportOptions options, Dictionary2 replacementLookup)
at regis3.RegFileExporter.Export(RegKeyEntry key, TextWriter file, RegFileExportOptions options)
at regis3.RegFileExporter.Export(RegKeyEntry key, String filename, RegFileExportOptions options)
at com.tikumo.regdiff.regdiff.HandleSingleFile()
at com.tikumo.regdiff.regdiff.Run(String[] args)
at com.tikumo.regdiff.regdiff.Main(String[] args)

(Stops)