Unexpected DB error occurred near:

Error After Major FUNC: add_update_counter_master_rec for rec_num: CL000006

--> set_rec_field_str called to set: "last_IP_addr" with value: {{38.107.191.114}}
--> set_rec_field_str called to set: "last_date" with value: {{1284018722}}
--> set_rec_field_str called to set: "S1" with value: {{1}}
--> set_rec_field_str called to set: "S2" with value: {{1283990400}}
--> set_rec_field_str called to set: "S3" with value: {{26}}
--> set_rec_field_str called to set: "S4" with value: {{1283904000}}
--> set_rec_field_str called to set: "S5" with value: {{}}
--> set_rec_field_str called to set: "S6" with value: {{1283385600}}
--> set_rec_field_str called to set: "S7" with value: {{}}
--> set_rec_field_str called to set: "S8" with value: {{1283299200}}
--> set_rec_field_str called to set: "S9" with value: {{}}
--> set_rec_field_str called to set: "S10" with value: {{1262304000}}
--> update_record called
*** get_db_error_msg called to return: Error from cbt level ***
===> ISAM error: Error from cbt level data file: Qfiles/Qcounters.db CBT error: key not found function: cbunlock context: finding leaf containing key ----> update_record function FAILED with error: Error from cbt level

DB Error= 1

Error Record's Field Contents:
CL000006| I| 1| 85330| A| 38.107.191.114| 1284018722| 1| 1283990400| 26| 1283904000| | 1283385600| | 1283299200| | 1262304000| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |