x64 Crashes on start

#1
Hello
I have windows7 x64 version with Technisat SkyStar HD2 which I bought with ProgDVB CD KEY more than year ago.

I have installed ProgDVB Pro 64bit (about year ago) which worked, but plugins (acamd) was not worked with it.
So I install 32bit version ProgDVB on my 64bit windows7.
So I have ProgDVB 32bit in c:\Program Files (x86) and 64bit version in c:\Program Files
(by the way when I installing 64bit version anyway default installation folder is c:\Program Files (x86) which I think is mistake.)

Now 32bit version runs well, but 64bit version is crashing. I remember They worked both both not with 6.49 and I do not know exactly from which version it stops to work, because I used only 32bit version.

So question: Can I have both version installed on my Windows7 64bit?
And is there any solution to get work acamd plugin on 64bit ProgDVB?

Sorry for my English.