Sorry for starting another support thread - I thought I had it all working now. Seems I still have another issue:
I use TubePress & NextGEN Gallery as well. They work fine - no errors FireBug says, however once I start enabling LiveTV an error shows up:
"Caught exception when booting TubePress: TypeError: Cannot read property 'cycleW' of undefined" ( tubepress.js:1)
I first thought this was caused by Tubepress since it mentions that plugin. However, once I disabled LiveTV Bundle the error was gone again. I enabled it again, and TubePress and NextGEN Gallery stopped working after that.
So I think that LiveTV Bundle is causing it, but I'm not sure what is happening exactly and if I need to look for a fix in WordPress or another plugin.
Hope you can help me out once more. Thank you!!
PS. I think it was jquery related because the developer of the Tubepress plugin told me jQuery was being loaded after the plugins were loaded (so too late). I then looked for issues with wp_head() but came to the conclusion that this function was being properly called/used. The NextGEN Gallery also has a built-in checker for wp_head() calls and it verifies this is working correctly as well.