[BAMsE]

Setup has problem with accessing Program Files folders due to Windows' UAC (copying anything to these folders is forbidden by default). Installation to any other folder works fine.
Now the question is how the hell other functions of setup gain access to system folders?
I have an idea how to override this limitation:
files are merged via cmd console and system's copy command directly into {app} folder (so in our case into Program Files folder). The trick will be to merge them via cmd into {tmp} and then copy to {app} directly via inno.
Please wait for an update or just remember to install to another folder

EDIT: this problem is solved now.