This re-config of SI5 is an odd bug and we have yet to track down the exact cause. Thanks for the details of when you are experiencing this, I will relay this to our dev team. We sometimes see this error when a user is logged in under a different Windows profile than the one where SI5 was installed, but not always. That does not sound like the case here since all of your machines are experiencing this. If you are on SP2 (build 597), you can try the following. Navigate out to the following folder and double-click the Si5-Client.msi file and let the SI5 Client re-configure: C:\Documents and Settings\senos\Application Data\D-Tools, Inc\System Integrator 5.5\5.5.597.0\install
Hopefully that will resolve the issue. If not, a full re-installation of the SI5 Client may be needed. Please contact
Support if you need assistance with this.