Command and Conquer Red alert Allies Second Mission Glitch

I have recently downloaded the Command & Conquer Ultimate Collection.

I first downloaded Red Alert 2 and started the story missions and completed the first allied mission.

On the Second Allied mission where you need to capture the allied base etc my 2 gi's and 3 engineers die straightaway for no reason.

When I defeat the flak towers and the sentry guns, reinforcements arrive who also die straightaway.

I have also tried the skirmishes and after about 30 seconds to 1 minute of game play all my units explode.

Os Windows 7 32 bit.

I am going to try the Soviet missions now and see if there is a fault on those as well.

Thank you in advance for your help

Hyseb13

Update: The fault is also there on the Soviet missions. Is there a 'self destruct' button I have pressed?