Call to a member function on a non-object in /view_photo.php

Hello

I've searched the forums for a solution to this error:
Fatal error: Call to a member function on a non-object in ../view_photo.php on line 80
which occurs whenever a thumbnail loaded into the random block is clicked, when that thumbnail is a album highlight for a nested gallery rather than an actual photo from within a gallery.

I'm running PHPNuke 6.5 with the latest version of the random block available at NukedGallery.Net although from the forums I can see people running the standalone random block have encountered this problem as well.

The solution would seem to be to exclude album highlights from the blockrandom cache - but I'm sad to say I don't have the PHP nouse to even begin to know how to do this - I wish I did!

Would someone who wants a bit of a challenge take this on (or if they know of an existing solution post it here) - it's a major hassle if you have a Gallery with a lot of nested albums.

My PHP is getting better, but still well in noob territory I'm, afraid...