Windows 7 Home Basic Key PDK on Win7 ActiveState

Forums: PDK Support | OS: Windows x64,Office Professional Key

Hi,Windows 7 Home Basic Key, I have activeperl 5.10 & PDK 7.3 installed on VISTA 64.Both of them worked fine on VISTA 64. I updated my OS from VISTA 64 to WIN7 64 last week. After the upgrade, I encountered the following problems. The activeperl still works fine. But many components of PDK have problem.
For example, if I try to launch filter builder, it will says "Can't initialize filter builder: No perl found at 'C:\Perl64\bin\perl.exe'. But the fact is the perl.exe is exactly laid there.
Another example is that when I try to launch perlapp, it will say "C:\Program Files(x86)\ActiveState Perl Deve Kit 7.3\bin\perlapp.exe is not recognized as a PDK tool".
However,Office Standard 2010, the Coverage Analyzer does work.
I have tried reinstallation,Windows 7 Professional X64, but it did not help. Following some thread I saw someone said something about the PATH environment variable. I checked it,Cheap Windows 7 Starter, it had no problem with PATH.
I just wonder it is said the WIN7 is almost compatible with VISTA, so is my problem caused by compatibility or something else?