I get the same thing with allvideos 2.5.3 on J1.5.9. Works fine in Chrome & FF, but when I try ie7, I get 'null' is null or not an object.

I did downgrade to 2.5.1 and the error went away, however, for other reasons I need 2.5.3 working.

I'm using my own template (not Rocket theme).

Any ideas on how to troubleshoot/correct?

Thanks,

Scott Gingrich

hi,
here is the same problem.2.5.3 and 2.5.2 have the same problem on ie7 and ie6.not on firefox.I try a lot of things.template etc. not conflict any mootools based module also.2.5.1 is good but 2.5.3 is faster

Have a same problem :(
I'm using Joomla 1.5.10, custom template and Shadowbox.

Thanks for solution with 2.5.1

Thanks to the developers for the great plugin. But it is a pity that they did not pay attention to this serious bug  :-\