MDL App Not Loading at Startup Automatically

I have an MDL app called SignCADV8.ma that I need to load at startup of MicroStation.  I tried putting the .ma file in C:\Program Files (x86)\Bentley\PowerGEOPAK V8i (SELECTSeries 4)\PowerGEOPAK\mdlapps but it did not work.

Is this the correct directory?  I noticed that there are .ma files in other directories like C:\Program Files (x86)\Bentley\PowerGEOPAK V8i (SELECTSeries 4)\PowerGEOPAK\mdlsys\required.  This is a working MDL App that I can load manually each time I need it, but I would like to have it load automatically for me.

Pat