Can't run GIMP, 64-bit error

Question

After upgrading to 12.04, I wasn't able to run GIMP. Now I installed the latest 2.8 from PPA, and still am unable to run it. I get the error:

gimp: error while loading shared libraries: libgegl-0.0.so.0: wrong ELF class: ELFCLASS64

strangely enough, gimp is 64-bit:

$ file /usr/bin/gimp-2.8
/usr/bin/gimp-2.8: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs)....

So why can't I run it? I reinstalled libgegl, I have 0.0.22 and 0.2.0 versions installed.

Answer 1

I started to get it working by uninstalling, then removing leftover files (I had compiled gimp at some point earlier), which are reported with whereis gimp. Now after reinstall, it started up with error, second startup complained about files in /usr/share/gimp nonexistent. After apt-get purge and install of gimp-data and gimp packages, it works!