Also what is the error you are seeing. Sorry I had read your first post as though you were getting the field is required message but I see now that you hadn’t actually mentioned what sort of error you were getting here.
Is it a field required message you are getting or something else here? If the former then the add-on owner would need to look into that. If some other error message then you may still need to go to the author as it would very possibly be something wrong with their add-on but just wanted to check to see if it’s maybe an ExpressionEngine error which might give a bit more information on all of this.
Here is a screenshot of the error:
http://d.pr/y3xX
( plugin can be found here: http://www.jaspaul.com/downloads/color-field-expression-engine-2.html )
It’s obviously a plugin specific error ( and I already disabled it by editing the code of the add-on )
So everything work over here, I just think it doesn’t make much sense to allow custom fields to run a validation check when they’re hidden.
Well we’ll have to agree to disagree on the second point there 😉
Then how would you make a custom field required for 1 channel, and hide it in another channel ? ( using the master-field-group approach )