Problem:

when trying to split view source - "No text to show" is coming up in the bottom portion of the window

Resolution:

Need to ensure that all mappings are correct and complete.  Even if mapping to the same location using different drive letters, the drive letter needs to be same that the project has in it's database.

if \\\\server-name\\application\\source is mapped to U:

then

   \\\\server-name\\application\\source needs to be mapped to U: even if it's mapped to L: or another drive on the machine, Revolve is specific to the drive\\path settings.