HELP! So close, yet sooo far!!!!

[VideoDude]

I am SOOOO close to having a functional store, but am having one nagging problem that I just CANNOT get beyond.

 

I added the "LinkPoint Card Service International" mod to handle MC/Visa payments. After carefully installing and upon testing I was dismayed to see an error "Cannot open temp file!". I have spent the entire day trying to resolve this issue... tinkering with permissions... tinkering with file ownership... even testing a couple of different areas in the code (just to make certain that the directory paths were OK). In the end I just keep getting the same error! AAARRRGGG! :? :? :?

 

Linkpoint provides a file named lpphp.php3. Within that file is a call that reads,

$fp=fopen($myfilename,"w");

 

Problem is, as noted above, I constantly get an error that reads...

There has been an error processing you credit card, please try again.: Cannot open Temp File! temp/TEMPFILE_200346165058_1

Normally the error message wouldn't display the filename, but I added a little code so I could at least see what it's NOT creating.

 

Now I KNOW this is a permissions issue... but frankly I'm just stumped (not being all that familiar with Unix). The directory to which this file is supposed to be written is currently 777.

 

Is there anyone out there who might coach me through this?