Open the installation file and check if there's an exec() or shell_exec() function. Look for the word "exec".
If there is, try to remove that line or the ones affected with comments.
Index: Nothing but a link
Index2: 2 exec's found*, removed, no changes
Index3: Picture file, relies on external php
Index4:2 exec's found*, removed, no changes
Index5:"Thats it!...
if you got here without any problems you're in good shape."
Thumbnailer:2 exec's found*,removed, index3 still does not show an image
* All 3 used }if(function_exists('_il_exec')){return _il_exec();
And had garbage text (Which I believe is ioncube doing it's job)
EDIT:
Just looking at the php versions. I wonder if I'd need the advanced version (because intermediate blocks exec). Still, I know that the staff here are very iffy about giving users the advanced version, if there is another way, I'm all for it.