customizable extension license not available

Discussion created by agray1 on Mar 23, 2012
Latest reply on Mar 23, 2012 by Neil
I have an extension that implements, IExtension, IExtensionConfig and IPersistVariant.  Every so often (about 30%) of the time, when I start ArcMap, the extension appears in the customize\extensions menu as "License not available".  The extension does not require a license.  I haven't isolated a pattern as to when it happens and when it doesn't.  Anyone know which property I should be looking at?  The state property is set to either enabled of disabled.