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Hi, Sure hope someone can help me. I have searched the forums and have not found a post mentioning a similar problem. I have OsCommerce 2.3.1 store up and working. I installed the add-on USPS Methods 6.0 exactly as directed in the intallation.txt and my admin page and login page disappeared. There appeared to be an internet connection, but the page was blank. So I removed all the files I'd added/changed for USPS Methods 6. I reinstalled my old files. Then worked my way back through the USPS Methods 6.0 files one-by-one. The problem is with the catalog/admin/functions/general.php file. I have now installed all USPS Methods 6.0 files except for that the catalog/admin/functions/general.php file. The USPS module is installed, but when I edit the shipping choices then click on save to save those changes, the screen goes blank and the changes are not saved. I assume the catalog/admin/functions/general.php file is the culprit. But I can't install it as is or I lose access to my admin pages and I do not know where the problem is, nor how to fix it. (It must be said that I understand very little php, but can follow directions very well). Can anyone help? Thank you very much for your time.