Workflow stops between tasks - cannot restart

[Michael Pokraka]

Hi all,
I've an interesting one:
- Workflow with two parallel branches.
- branch 1 errors, and recipient on branch 2 executes their item
- Because the WF is in error, the next step on branch 2 doesn't start
- Error on branch 1 is resolved, it continues.
- Branch 2 just stays dead, no way to restart. - one step is complete, and the next simply doesn't exist.
I tried changing it to an error status, tried SWPC, tried changing it... no luck.
The most annoying thing - I've tried to reproduce this in dev, but there it works fine (If the error branch is resolved, the other one continues automagically - as it should).
Anyone bumped into something similar? 4.6c by the way. Oh, and something else I picked up - it seems intermittent, fun fun :-)
 
Cheers
Mike