US Patent 9009539 Identifying and grouping program run time errors

A stack trace associated with an application program is received and at least one recognizable term is searched for in the stack trace. A digital signature is generated from at least a portion of the stack trace that includes the at least one recognizable term. If the digital signature matches a known digital signature among a plurality of known digital signatures, the stack trace is grouped with other stack traces associated with the known digital signature. Method call graphs in grouped stack traces may be analyzed to determine common pathways leading to an error.