Due to some changes in our updating server layout and build systems, there may be extra steps required during the updating process to the latest major version: 0.5.4.
Those extra steps depend on your operating system, however we created small extra packages that outline how to fix your issues.
All Mac/Windows users, please download this
zipThose on a 32bit linux systems have to get
this and those on a 64bit linux system
this one.
After downloading the files check the README.txt in there for further instructions on how to proceed if you're encountering issues.
If you still have issues, please don't be afraid to ask in #planeshift on freenode or right here in this thread

If only the self-updating fails, also check our related
help guidekind regards,
RlyDontKnow