I'm trying to install Simple Portal 2.3.5 on a freshly upgraded SMF 2.0.4 install; this will be the first mod I install as usual.
I made the permissions changes to all the directories and files as specified in the other posts. I seem to recall the last time I had this issue was because /Packages/temp did not exist. In this case, the temp folder did not exist again. I created it and did the CHMOD 777 on the folder successfully. Then, when I hit refresh in the Packages folder, I see that the temp folder I just created and CHMOD'ed is gone! I'm using iPage as my host.. do you think this is something they're doing on their end? None of the other directories I create disappear.
I'll chat with the iPage support folks too.. If you think this is the reason I'm getting prompted for FTP info, please let me know.