Error 75 (Path/File access error)

system:
Windows 2008 R2 (x64) (terminal server services)
(PDFCrator 1.2.3)

I logged in as Administrator, so i have full administrator rights.

When i start pdfcreator.exe ("C:\\Program Files (x86)\\PDFCreator\\PDFCreator.exe") i receive immediately the error: 75 (path/file acces error).

I tried to uninstall and install it clean, but no results.

I searched the forum and can't find a solution. Pleas help!!

EDIT:
Modul: modlNIFastRead
Procedure: ReadToString
Line: 50050

When you click on next command you get the next error: 52 (bad file name or number)

Any ideas?