SP campaign '89 fix

Very last patch for our Mod under the A2:CO has been released.
This small patch or better say fix, contains updated PBO for our SP campaign '89 which was released in the regular full release v2.26.
In the package you can find also the PDF document which describes in very detailed way, how to go through the all missions in campaign '89.
Anyway, this PDF document can be downloaded also as standalone package here.