earthdog:
The problem with the shopping cart got resolved when they reset my password (or whatever they did) to my SQL Admin database. Thank you for your help anyway.
Welcome, figured it would when they resolved the password issue. For anyone else that reads this thread, the php files were not lost/the issue, the other half of the store (the database/sql) was "locked" or inaccessible. So the restoration by csv file would only be part of the solution, other things such as the template settings, image sizes, shipping settings, payment settings, etc... They might be in a csv file, but I assume that the csv file in question is one that is used for something like easy populate or apsona, etc...
Regarding the maximum field length,I'm guessing it ismore dependent on the server software, but typically is some multiple of 2 or (2^n)-1 too many? Well, from a technical aspect no, from a store/shopping perspective maybe. Depends on what is really captured there.
With regards to what caused the "shopping cart" to go down, I would say it was the mysterious password change that was done. It seems that both setup files had matched each other, and access to everything was lost at about the same time that some password somewhere was changed.
Now if you have a concern that this information was changed/modified outside of your control, then I would suggest following the "I'm concerned that my site has been hacked" thread direction.