Cannot update payment module details

[JRF19]

I've just installed the Worldpay payment module and am trying to set up the details. I can edit the fields but when I click 'update' the screen just goes back to the Admin Home page. When I go back into the payment module the edits are not there.
This seems to have happened since I installed Worldpay. I already had Paypal installed and working, but now I can't edit that either.
Probably something simple, but I'm stuck.



Grateful for some advice. Thanks.

[DrByte]

Sounds like you installed the June 2009 Admin Security patch, but didn't put all 5 files on the server properly. Sometimes people mistakenly touch the non-admin html_output file instead of the admin one, thus breaking things in both their admin and their storefront.

[JRF19]

Thanks Dr Byte, that solved my problem, in a round-about way. ;-)

All the files for the security update appeared to be in the right place, so I downloaded the html_output file and had a look at it and compared it to the manual patch procedure, just to check I had the right thing. The line of code you add for the patch had a line break in it. I removed the line-break and reloaded the file and now it works!

Don't really know how it got like that. I don't honestly recall loading the security patch, so maybe my hosting company did it and there a was a glitch somewhere? Seems a bit unlikely as I'd expect the problem to crop up with others and for it to be fixed and/or notified.
However, it seems ok now, so that's fine.

Thanks again for putting me on the right track.