General Support: Upload and Import hang application

I was running version 2 successfully. I upgraded to Beta 3, and it was working as well with only 2 problems: import thumbnails would not show up and clicking on an image in the gallery for the full version would fail, because there was an extra "index.php" in the linked URL. I resolved the second issue:

Changed some code in "function plogger_get_source_picture_url()" in the "plog-functions.php" file:
Replaced> return (!empty($config['allow_fullpic'])) ? $config["baseurl"].'images/'.SmartStripSlashes($GLOBALS["current_picture"]["path"]) : "#";
With> return (!empty($config['allow_fullpic'])) ? 'images/'.SmartStripSlashes($GLOBALS["current_picture"]["path"]) : "#";

, but the thumbnail problem remained. I tried using the Import feature and the whole application stalled. I was unable to access plogger or plogger admin after that. I reinstalled Plogger and recreated the database. Ran the install again, but had a password problem when logging into Plogger Admin. Resolved that issue by using phpAdmin to set the admin ID and PW in the MySQL db.

So now, when I try to import or upload images the entire application hangs and I'm unable to get into plogger or plogger admin. I've reinstalled from scratch several times, but import and upload still don't work (they did work before the first re-install). I searched for discussions on this issue, but found none. Your assistance would be greatly appreciated. My plogger is at www.ctr.usf.edu/plogger .