Error in method call getEditValues() of Grid

[tgallage]

This is my current application environment :
1) Java 1.6, GWT 2.1.0
2) SmartGwt 2.5 Nightly build on May 02, 2011
3) All data sources are JSON RestDataSources.

Map map = grid.getEditValues(grid.getSelectedRecord());

above code has been working fine from SmartGwt 1.3 . But with SmartGwt 2.5 Nightly build on May 02, 2011 it produces following error.

"convertToMap - unable to convert JavaScript object passed in to a Mapnull"

[Isomorphic]

This code is not enough to reproduce a problem (try adding it to any editing sample). Please let us know if you can get this error to happen by adding code to a sample.