Thread:Project:Support desk/latex parsing error on RHEL 6 - PNG conversion failed

When putting the following formula into a wiki page $$y=x+12$$, I get the following error

Failed to parse (PNG conversion failed; check for correct installation of latex and dvipng (or dvips + gs + convert)): y=x+12

I read the FAQ, and the root user has all needed programs on its path Running texvc from the command line works. I am running RHEL 6. The apache user is not chrooted.

Are there any other suggestions on how to solve this issue?

Thank you