Hi All,

I've create a module that has a usercontrol containing a ComponentOne control - the WebTopicBar. Everything goes smoothly until I try to add the module to a DNN page, at which point I get the following error:

 The string parameter 'tagPrefix' cannot be null or empty. Parameter name: tagPrefix

Can anyone shed some light on this? Are there any prerequisites to use C1 components with DNN?

THanks.

Fleming

Thanks for replying.

I believe we had installed the DNN templates only, and I was just adding user controls to the sample DNN application (I think). I tried going through the script (from the link you sent) with out current installation and I was getting build errors.

So, we're going to reinstall with sources and follow the script again . Hopefully, that'll solve it.

Thanks again.

Fleming