How can I fix a call to undefined function libraries_load() in GeShi Filter? I just installed GeSHi Filter and had to install the Libraries API for it. When I try to go to configuration settings I get this error:

Fatal error: Call to undefined function libraries_load() in /home/username/public_html/drupal/sites/all/modules/geshifilter/geshifilter.module on line 23


For the moment, I uninstalled all the above modules and its back to normal. Does anyone have any idea on how to fix it?
It appears you tried to use the recommended branch of Libraries API (marked green): 7.x-1.0. Generally, this is a good thing to do, but it can cause problems when modules have dependencies that are still in development.

In this case, Libraries API 7.x-1.0 doesn't the define the libraries_load() function that GeSHi Filter needs. You need to use the latest 7.x-2.x development snapshot.