Okay it appears to be what I thought a styles issue.
Meaning missing files or settings.
There are image links.
Goto Control Panel » Styles
Select edit for whatever is your default style.
Then on the top left select the first item
Name, Images & Wrapper
Look and see what is listed for the images items.
Usually it is default unless you are using a custom style.
So that would mean that:
domain.com/forums/images//toggle_open.gif
Should be:
domain.com/forums/images/general/default/toggle_open.gif
I tried that and the file does not exist.
So that means either both your setting is wrong or you never moved that folder to your new site.
I am not sure what the melanie folder is all about. but probably adds to the issue.
PS,
http://arpeggioentertainment.com/forums/melanie/images/general/default/toggle_open.gifseams to be the path to that folder that I just found.
So you need to fix the path in the styles or move the files to the default path
