Can't run two simular programs simultaneously

Ok, here's my issue. I have two research programs that both have the same named exe file. One is in English the other in Spanish. Previous versions of ObjectDock 1.5x and below have't given me any problems. I can run the both programs simultaneously. Now however, OD1.9 only allows one version to be launched at a time. What's up with that? BTW, If I run the program normally from the program group menu of XP no prob.