Fatal error on install

[djrichards]

I'm trying to install the latest version of Gallery Pro on my site but get the following fatal error when executing galleryinstall.php. All the initial tests are fine.

SMF version is 1.1.3.

Fatal error: require(): Failed opening required '/hsphere/local/home/.../forum/Packages/temp/./galleryinstall.php' (include_path='.:/hsphere/shared/apache/libexec/php5ext/php/') in /hsphere/local/home/.../forum/Sources/Packages.php on line 552

[SMFHacks]

Make sure that the temp folder exists should be
Packages/temp/
And make that path writable

[djrichards]

Still same same