exception of class error??

[evoluzione]

just installed MacTracker last night, went to bed, maybe had a power outage, but my G4 is running off a huge battery backup so it shouldn't have been affected, had to restart G4 this morning and now MacTracker loads up ok, but when i want to look at a file within it, i get the message below....anyone have any ideas how to resolve this one??

thanks as always

 

[AdamR01]

I am not familiar with this program but my guess is its either a bug in the program or something got deleted during the power outage and the program needs to be reinstalled.