Hi,
Firstly, let me see if I understand the issue correctly - SERP 8.3 client is crashing randomly and causes server restart, right? If yes, is it only a particular client or all of them? Have you tried downloading a new client from MyStandard and testing with them?
If that does not help, could you please test this issue on the latest 8.4 version and check if it can be repeated?
By testing in 8.4 I would suggest doing everything exactly the same (i.e. setup a client-server mode, importing the last backup and etc.).
Regarding your second message, seems like there are some issues with some of the Sales Orders attachments (maybe try testing uploading attachments to several of the records).
Regarding your third log message, seems like there are some issues with NL Transaction No. 10692 - please check if there is something unusual with that record.
Let me know if I could assist you more.
Best regards,
Pijus
HansaWorld Support