Why am I getting a Horde error message?
If you are running a version of PHP prior to 4.3 on your dedicated or virtual dedicated hosting server, Horde will not function correctly. The most common error message is "Fatal error: Failed opening required."
To correct this, you must specify the path separator by modifying the file "usr/share/psa-horde/lib/core.php."
Change the existing line:
to the following: