Blueprint Error: "The Model Manager is currently unavailable. Please try again shortly".

Problem:

When I select Devices from the Assets section or when I attempt to close a period I receive one of the following errors:
 
 "The Model Manager is currently unavailable. Please try again shortly"  "The period end settings could not be read"
 
The Blueprint Administrator log file shows a an message code of "MessageCode: 141254"

How can I correct this problem?

Resolution:

The symptoms are caused by a malformed 'C:\Program

Files\PharosBlueprint\SettingsCache\ServerSettings.xml' cache.
 
 To fix the problem please see the steps below for the version of Blueprint Enterprise you have installed.

For Blueprint 3.5

1. Stop the TaskMaster service.

2. Delete the file 'C:\Program Files\PharosBlueprint\SettingsCache\ServerSettings.xml' (it will be automatically re-created correctly).

3. Start the TaskMaster service.

 Blueprint 4.2 through 5.2

1. Stop the service "Pharos Systems TaskMaster".

2. Open the directory "C:\ProgramData\PharosSystems\Blueprint\SettingsCache" and create a new folder called "old".

3. Copy the two files named below in the directory in step 2 to the Old directory you created above.

      ServerLastKnownGood.xml

      ServerSettings.xml

4. Delete these two files.

5. Start the service "Pharos Systems TaskMaster".

*The files will be re-created once the service is started.