Ramalam,
You need to contact Support. I suggest using the Live Help/Chat during office hours that's found under the Support link at the bottom of the page. PG Music have a 30-day money back guarantee - no questions asked.
One thing to check...
Power Tracks Pro Audio comes with Realdrums and I suspect that Realdrums are placed in what would be a Band In A Box path. When I installed PTPA, because I have BIAB and Realband, I didn't have to define a directory.
With Band In A Box and Realband, by default installation, they are always first-level folders off the main drive.... for example, C:\bb and C:\Realband. Have a look at your computer and see if these folders exist.
Did you install PTPA in c:\pt?
Try the following...
1. Click on the Drum icon (#1 on the image below).
2. Click on the "Select" button (#3) and then navigate to c:\bb\drums (if it exists on your computer).
3. Select OK.
4. Check that the Realdrums path is c:\bb\drums (#2). My setup says d:\bb\drums because that is where I store Band In A Box.

Hope this helps,
Noel
P.S. I see rharv posted while I was putting mine together! He's very quick!