Hi,

This is usually a version mismatch. Please check your project reference to see if it is referencing the same version you have installed. You can also verify whether this is a problem by creating a new blank project and try to use our controls in the blank project.

Thanks

Hi,

I don't believe this has anything to do with EnableViewState. It's probably just when you change that property Visual Studio needs to refresh the controls and while it refreshes it failed. As previously explained, this is almost always caused by a version mismatch.

I am not sure what exactly you meant by "Designer exe". If you meant Visual Studio and that is not working, then that might be the root cause and you certainly want to get your Visual Studio working first and you may want to contact MS for help. If you meant that Visual Studio is working but our controls are not then you can try the following steps:

1. Check whether the controls are installed on your machine by checking whether all the files inside "c:\Program Files\Essential Objects\EO.Web Controls 8.0 (2010)\ exists. If you don't see that folder or see a lot of empty folders then it is not properly installed;

2. If the control is installed, skip to step 3. Otherwise run the installer. If it stuck in the middle, start your task manager and look for denenv and kill that process. The installer should continue;

3. Once the installer completes, start your Visual Studio and check your toolbox items. If you see "EO.Web" tab, then delete it. Once it's clean you will need to manually add all our controls back:

http://doc.essentialobjects.com/library/1/installationanddeployment/install.aspx

4. Start a blank new project and try our controls to see whether it works;

Hope this helps.

Thanks!

Of course.