[img 1]

[img 2]

• The first reason can be unchecked Startup checkbox in Add-in Manager.
  Fix is very simple, check Startup checkbox for WSPBuilder [img 3] and if menu do not show after that, try to restart Visual Studio.

[img 3]

• The second reason can be caused in the case you have installed english version of Visual Studio 2008 on non-english Windows. On Windows XP search english version of Visual Studio 2008 AddIn files in directory "C:\Documents and Settings\All Users\Application Data\Microsoft\MSEnvShared\Addins\" and here is the problem. If you have installed non-english Windows XP, then "Application Data" folder have localized name (for example "Data aplikací" in czech language).
  Fix is as simple as in the first case, create english path "Application Data\Microsoft\MSEnvShared\Addins\" in "C:\Documents and Settings\All Users\" and copy WSPTools.VisualStudio.VSAddIn.AddIn to created path [img 4]. On Windows Vista is fix like on XP.

[img 4]

• The third reason is simple "It’s broken…", try reinstall 1. WSPBuilder, 2. VS, 3. Windows