Anyone haved problem with a message in red saying 'missmatched'?
You need to update to the newest version.
The original MakoCELO used the Warnings.Log text file on your PC to get the player names and ranks. That file had two sections in it to get that information. The mismatched error meant that only one section was found in the file.
Relic broke the log file when they put out the 64-bit patch so older version no longer work. Because they are Relic and cant do anything right ever. I think they are obligated contractually with the devil to be perpetually inept.
The last version I worked on was 4.50. Redgood has done some work since then and may have more options in his version. Last I knew Neffarion updated the original CELO as well so you could check that out.