Do you experience problems during downloading?
Check your connection in Status and Interface settings window.
Use Test Server in Config > Servers.
We will probably ask you to do a test using only basic settings.
Do you experience problems during repair or unpacking?
Enable +Debug logging in the Status and Interface settings window and share the relevant parts of the log here using [ code ] sections.
I'm running v0.5.5 RC1, i'm trying to set up SickBeard but when i go to Categories in Settings there is no option for choosing User Scripts... I've reinstalled etc but still the same. Why is it not there? Here is a screenshot of what i mean: