1017 - Unexpected character '%c' in variable value.

Description
At the location of an expected variable value, an unexpected character was encountered. See the Synax Guide for details of valid variable types and their syntax.
Example
Config:
.Var = whatisthis
Output:
c:\test\fbuild.bff(1):(8) FASTBuild Error #1017 - Unexpected character 'w' in variable value. .Var = whatisthis ^ \--here
Fix:
.Var = 'String'