It was never a problem in 0.4.10 though, it was only when switching to .11 that any issue arose.
The folder which caused the problem wasn't even a mod, I was just using it to store some mod-related spreadsheets.
Copyright (c) 2010-2013 Perttu Ahola <celeron55@gmail.com>
and contributors (see source file comments and the version control log)
rubenwardy wrote:Pull request fixing 3) was merged. Error messages will no longer spam the chat in 0.4.11-dev or 0.4.12
rubenwardy wrote:5. Did you have no clip enabled and were you in fly mode?