We have been getting the same message as I will post at the end for 5 days now. Hostcentric says they have their top engineers working on the problem and for 4 days they tell us 4 or 5 hours more. Could someone from shopsite call them please we are losing money and may not make it if we can't get this going. I have tried both options and nothing works....
Warning
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Unable to lock orders files. This could be because another user (or process) is currently accessing them. Wait at least one minute, then try again.
If you have clicked the Try Again button but always get this error message when you go to the New Orders screen and attempt to view, download, or remove an order, you may need to force the removal of the lock. Wait several minutes and make sure no other co-worker (or process) is currently accessing orders. Check the time (see below) when the process created the lock and make sure it is at least 10 minutes older than the current server time. If it is not at least 10 minutes older press the Try Again button above.
Information on process holding the lock
Process 0 seems to have acquired the lock Wed Jun 30 11:59:39 2010
(Current time: Wed Jun 30 23:48:11 2010 )
Warning:only remove a lock if you are sure no other user is accessing orders and enough time has elapsed from a previous lock.
If forcing the removal of the lock does not solve the problem have your web master or administrator check the file permission on the .processing file in the ShopSite data directory.
Note: Even with a locked orders database shoppers can still place orders.