The tool help for Set Symbols Values script says the file Type-FgdcSymbol.txt is in the Scripts folder (see below), but it's actually in the Resources folder.
"Symbols are only calculated for recognized Type values. Recognized Type values are given in file Type-FgdcSymbol.txt, which is located in the Scripts directory of the GeMS toolbox. That file may be edited to reflect your choices for Type values, add additional Type values, or change the correlation between Type and symbol ID. "
The tool help for Set Symbols Values script says the file Type-FgdcSymbol.txt is in the Scripts folder (see below), but it's actually in the Resources folder.
"Symbols are only calculated for recognized Type values. Recognized Type values are given in file Type-FgdcSymbol.txt, which is located in the Scripts directory of the GeMS toolbox. That file may be edited to reflect your choices for Type values, add additional Type values, or change the correlation between Type and symbol ID. "