Some problems detected

after using Maian PAL for a few days now I have run into a few (minor, I guess) problems:
When using the feature "Post tweet" I get an error there have been problems with connection to the server and I am told to check the log files.
The log files tell me some files (init.php, global.php, settings.php) do not seem to exist, but they are all there.
This is what the Ajax log file tells me.

Second problem is that I cannot find the place to change my Paypal email ANYWHERE should I need to.

Mind you, I still LOVE the script, but obviously I would like to see those things ironed out.

Any further advice, anyone?

Thanks in advance.

The first problem is solved, I had not entered any Twitter API details.
Not sure about the second one, though.