Thanks Andy,
I do have three installations on my system,(I know!!) One for Mods OOb edits and the like, (which I dont play any pbem games in) One to finish my old pbem games and one (from the CD) for my new games.
The problems have occoured once in the CD version and once in the D/L version.
Once the error occured when it was my turn and once when it was my opponents turn.
I tried deleting the old "faulty" turn restoring the previous "good" turn and then re-playing the "faulty" turn. still the same message.
Although I havent installed to the default paths in any version, neither have I changed the paths since the games were installed.
Obviously with two competing versions of the game on my system there is the risk that I inadvertantly unzipped to the wrong game but, obviously, I dont think that happened.
Anyway as my PBEM games fail the need for having more than one version on my system is rapidly becoming academic
I understand why you believe that the game should halt if a security breech is recognised...but if it didnt do that at least we could all have finished our games.