Max number of dependencies for CustomCode action?

Does anyone know if there are a maximum number of dependencies allowed to be specified for a Custom Code action? I have one that requires 27 dependencies, and when I try to execute I get:

java.lang.ArrayIndexOutOfBoundsException: 20
at com.zerog.ia.installer.ConsoleBasedAAMgr.verifyAndManageForSignedJars(Unknown Source)
at com.zerog.util.ZGUtil.verifyForSignedJars(Unknown Source)
at com.zerog.ia.installer.actions.CustomAction.getVisualNameSelf(Unknown Source)
at com.zerog.ia.installer.InstallablePiece.getLogDescription(Unknown Source)
at com.zerog.ia.installer.IAStatus.<init>(Unknown Source)
at com.zerog.ia.installer.IAStatus.<init>(Unknown Source)
at com.zerog.ia.installer.AAMgrBase.an(Unknown Source)

So it would appear we have a limit of 20 dependencies for a Custom Code action?