When I try to save my package with Monticello I get this error:

Error: Reading a number failed: a digit between 0 and 9 expected

It seems I screwed up my last save (accidently edited the name instead of the 
log message). Checking the history reveals the following list:

<working_copy>
Added RulerMorph, no values display yet.
Rockie-ml.10
Rockie-ml.9
Rockie-ml.8
Rockie-ml.7
Rockie-ml.6
Rockie-ml.5
Rockie-ml.4
Rockie-ml.3
Rockie-ml.2
Rockie-ml.1

Does anybody know how I can recover from this?

Thanks,
Markus