Video transition on Adjustment Layer causing errors

Question

I have video transitions (native, not plug-ins) on an adjustment layer without any effects.  When playing, the video freezes on the last frame before the transition and then continues playing after the end of the transition.  The transition does nothing but hold that frame.  Also, if I try to render the work area or export, I get the "Error compiling movie: Unknown error".  If I remove the transitions, things work ok.
Starting a New Project and importing the old one did nothing to fix the problem. 
I've got plenty of RAM and HD space, please help.

Answer 1

Then...why are you using one.  Just apply the transitions directly to the clips.
I did this to discover why another project was producing the "unknown error" when rendering and exporting.  I kept everything clean changing one variable at a time on a new project: clip sources, resolutions, transitions, effects, adjustment layer, etc.
          If rendering the sequence works, then that is the appropriate solution. Do you have a red line above the timeline indicating that you need to render? Or do you need to set the opacity at 99% - AND - then render to make it work.
Simply changing the opacity to 99% worked, no need to render.
          Just out of curiosity, why are you putting transitions on an Adjustment Layer? I can't think of a reason, but then again, I use transitions between nested sequences a lot. Maybe it is in place of that?
An effect in an adjustment layer is jarring if its transition does not match one applied between clips.