You have the most up-to-date version of Ledger. More information is required.

Questions:
-Is this a new deployment (ie. new server)?
-If not, when did this behaviour start? Did anything change at that time?
-Were any Adagio updates installed?
-Is there any message?
-Is there any pattern to what user(s) are doing when FR crashes?
-Is it just one user or all users?
-Does the Ledger data pass a Data Integrity Check?
-Does FR crash in the same way when using Sample data?