There are the log errors but the product works fine, and the error message is pretty much like the following ones:
‘SharePointBoost.LicenseManagementCenter’ (id:46cd899c-569d-47c8-8b11-38aaf5af02f6) using attributes (ControlSrc=”, ControlAssembly=’SharePointBoost.License, Version=2.0.7.0, Culture=neutral, PublicKeyToken=15fd9ef9a2ec3a95′, ControlClass=’SharePointBoost.License.Management.RedirectControl’: System.ArgumentException: The control with assembly name ‘SharePointBoost.License, Version=2.0.7.0, Culture=neutral, PublicKeyToken=15fd9ef9a2ec3a95′ class name
Solution:
Run this tool by administrator, after that, choose the site and list, on the right hand, click the button "delete all invalid".
You may download this tool by this link:
https://speventreceiverman.codeplex.com/ (2010)
http://www.boostsolutions.com/software/EventReceiverManager2013.zip (2013)
Applies for: SharePoint 2013, SharePoint 2010