This means, that you use a channel in your expression code that is not contained in the Active Channel list. This can have several reasons:
- you have renamed an object in the Universe project window (Xpressionist cannot find the object anymore)
- you have deleted an object in the Universe project window (Xpressionist cannot find the object anymore)
- you have switched a vector channel from implicit to explicit translation
- you have written down a channel name manually that is not contained in the Active Channel list
To link all variables to your script use the "relink Channels" Command in the Active Channel pull down menu. Xpressionist will look for the channels in question and add them to the Active Channels list if it finds them (also refer to Active Channel pull down menu ).
If it does not find the channels in the project Xpressionist will give you another Error: Object not found
