Today the VSPackage I'm developing failed to load, and Visual Studio prompted me to check ActivityLog.xml. It also asked "continue to show this error message?" And accidentally I pressed no.
The window I'm referring to looks similar to this:
How can I revert pressing "No"?
I couldn't find any switches in Tools>Options. This seems like a difficult phrase to search on google.
When you press No, Visual Studio creates a registry key HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\VS_VERSION\Packages{YOUR_PACKAGE_GUID} (e.g. HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\12.0\Packages{9A7EBB7F-B08C-4E35-9898-A7B73468A624}) with a value SkipLoading=1.
You need to delete this SkipLoading.