Conquest Error

Helo,

I have this error with my Conquest Server. The server works fine 3 weeks with no errors.

[PACS]
[PACS] UPACS THREAD 9: STARTED AT: Wed Mar 19 19:53:56 2008
[PACS] Calling Application Title : "admin"
[PACS] Called Application Title : "PACS "
[PACS] Application Context : "1.2.840.10008.3.1.1.1"
[PACS] Presentation Context 0 "1.2.840.10008.5.1.4.1.2.2.2"
[PACS] C-Move Destination: "admin"
[PACS] Number of Images to send: 170
[PACS] Host 'admin' did not accept the connection
[PACS] C-Move (StudyRoot)
[PACS] UPACS THREAD 9: ENDED AT: Wed Mar 19 19:54:01 2008
[PACS] UPACS THREAD 9: TOTAL RUNNING TIME: 5 SECONDS

How to resolve the error?

Admin is KPacs viewer and it's work with hamachi VPN network.
It's work fine until yesterday 3 weks.
In local network is work fine.