Errors with nightly builds (linux)

A strange set of errors occur when running modelbuilder from a nightly build downloaded from data.kitware.com. The first symptom is an error message written to the Output Messages when loading an smtk template containing a <File> item:

Numeric mode unsupported in the posix collation implementation

A secondary issue is that numeric keypad input is ignored. I cannot reproduce this with my developer/debug build.

To reproduce:

1. Download nightly build from https://data.kitware.com/#collection/58fa68228d777f16d01e03e5/folder/5980ed698d777f16d01ea0e8
2. Unzip and start modelbuilder
3. Open the attached example.sbt
4. Look for the error message in the Output Window.
5. Try editing the "number" item with the numeric keypad part of the keyboard.