[Wiltshire] Synaptic Broken in PCLinuxOS

[Simon Sanders]

Can anyone help/advise, please?

I'm running PCLinuxOS and I was getting concerned that I haven't seen any 
upgrades for the past 5 or 6 weeks, so I took a look at the Synaptic settings 
and found there was just one non-free vendor listed in the repositories. I 
fiddled with the list (can't remember exactly what I did) and now I can't get 
access to anything.

When I try to Edit => Reload Package Information I get 2 dialog boxes. The 
upper box states 

"Could not download all repository indexes. The repository might be no longer 
available or could not be contacted because of network problems. If available 
an older version of the failed index will be used. Otherwise the repository 
will be ignored. Check your network connection and the correct writing of the 
repository address in the preferences." followed by an accessible list box.

When I close this dialog box, the second dialog box states:

"The following problems were found on your system:" and, in a list box:

"E: Vendor block FingerPrint is invalid
E: Vendor block Name is invalid
E: The list of sources could not be read."

I get this same second dialog box when I try Settings => Repositories

I can't find any web-based guidance via Google. Can anyone point me at a 
swolution or should I simply re-install the whole lot?

Simon Sanders
Salisbury