The NG forum is where you need to be posting these issues. (I can move the thread if you like).
For differences between 7000 and 7500, a quick google yielded this.[Link: avsforum.com]
For your first issue, go into the firmware settings on the remote and turn off 'Cursor Mode'. That will solve your problem.
For the second issue, ensure you are running PPENG in Administrator mode. Not sure if this will correct it. Will also help us if you can give us more information about the OS and architecture of the machine on which you are running. Win7 32 bit for example.