MT4 issues on Vista

 

I work with two brokers and use to have both of the MT4 clients installed on XP. I migrated to Vista today and can't see able to make both work happily. One installed just fine and works. The second one asks me to update and doing so makes the application freeze. Additionally just one of them shows (always last installed) in add/remove programs.

Anyone know how I can get multiple clients running happily on Vista?

Thanks.