[Haidon]

Originally Posted by wallcraft

I suggest going to HarperCollins and finding your PIDs there. Copy one to the "clipboard "and paste it into the command line (however this is done under OS X). So far as I know the PID is always 10 characters long and the last two characters are the checksum (confirming that the 1st 8 are correct). If this works, most likely you have misread a 1 as I or a zero 0 as a O.

Though there is only one 'I' in the PID I also tried this approach, though it has returned the same error message.

Originally Posted by wallcraft

If none of this works, Igor kindly provided us with the PID of someones Kindle to test kindlefix.py. So try V176CXM*FZ as the PID. It will fail because this isn't a PID authorized for your ebook, but the point is this PID has a valid checksum and so it should fail with a different error message (Error: no key found. maybe the PID is incorrect).

I got the other error message when I inputted that PID (Error: no key found. maybe the PID is incorrect).

Originally Posted by riverhorus

Just to let you know and anyone else having an invalid PID checksum with MobiDeDRM0.02. I went back to ver 0.01 and had no problem running the program. Something appears to be broken in ver 0.02.

Both version return the same error message unfortunately.

As my attempts to run the script under Mac OS X (my main machines, unfortunately) have failed, I've also tried loading the script through an oldish Windows machine. I read a tutorial explaining that in order to run it it is necessary to create a .bat file with the following:

mobidedrm002.py inputfile.prc outputfile.prc PID
pause

This only brings up a message telling me how to use the application:

MobiDeDRM v0.02. Copyright <c> 2008 The Dark Reverser
Removes protection from Mobipocker books
Usage:
mobidedrm infile.mobi outfile.mobi PID

After this it just says "Press any key to continue..." and then closes without actually doing anything. Am I doing something wrong the the DOS command?

Once again, thanks for any and all advice!