Weaving main.cc
* Running ac++ 1.2
* Handling Translation Unit `main.cc'.
  - Path "main.cc"
  - Parsing ...
  - Weaving Aspects Forward Declarations ...
  - Inserting namespace AC
  - Committing
  - Preparing introductions ...
  - Parsing again ...
  - Weaving access control bypass classes ...
  - Weaving Join Points ...
    Advicecode manipulation
    Collecting Advice
    Matching joinpoints
    Aspect ordering ...
    Updating project repository 'repo.inv'
    Aborting
error: project repository 'repo.inv' cannot be opened or is invalid