I get this error when I try to run the upgrade script even though I chmod the config file to 777:
"Software error:
Unable to open vars_config.cgi file for writing. at ubb_upgrade.cgi line 52. "
Why?

Actually I installed the full ubb 604a before attempting to upgrade. Is that wrong? (I know I should not have done this, but what can I do now?)

Also, I get a aruntime error when trying to post a reply or a new post becasue of the code buttons.
Would upgrading to 604c fix this & what files do I need to replace (as I don't want to upgrade becasue of the mods I've installed).