Imagej able to read videos and sometime not

[Yurfers]

Hi

I have a problem opening some avi files in imagej. I have a set of videos that were taken over a given time
i.e. 1.avi, 2.avi, etc...

But i could perhaps open 1.avi and not 2.avi.

The error message that comes up is;

plugin or class not found "avi_reader"
(java.lang.Noclassdeffounderror: avi_reader$rainputstream

I tried to install the avi_reader from here

http://phage.dk/plugins/avi-loader.html

but this does not seem to do anything.

Any ideas?

Thanks!