Getting Corrupt Memo / BLOB File Error with a Paradox table


I am getting "Corupt Memo/BLOB file " error with a paradox table.

There is only one field which is formatted memo. I am getting this error for the corresponding memo file tblxxx.MB.

Totaly the table is currently have 429 records, and before any corruption, for each record I think the biggest size of the memo field was at most 80 characters.
Now I don't know how and why it is corrupted but the current size of the corrupted memo file is 786,572kb. Yes it is imposible but it is.

Please someone help me, first of all, how i solve this problem (because the memo field contains billing informations) and prevent my system from refacing with the same problem.

Thanks in advance.