Steve
Here are a couple of pointers that may be of assistance, as I had great difficulty on Vista also (and Alan was no use at all!!! ;-)..........eh Alan?)
Make sure you only have one version of RadarBox on your machine - id three even though I only regularly use one, and it downloaded ok to whichever version I pointed it to, but on opening , somehow overwrote itself.
Secondly, if this doesn't work, take a backup of you current data files such as Mylog/logos/pictures etc (just in case you ant to re-use them), and then do a complete re-install of RadarBox
took me about seven or eight go's until it worked, after trying various options, and the only way it worked was via a re-install.
As Alan will no doubt concur, if I can get it to work, anyone can!!
Good luck
Rich