Comment 1 for bug 1100262

This may or may not be the same issue, but I'm seeing this JS console error:

TypeError OILS_RPT_TRANSFORMS[par.column.transform] is undefined
oils://remote/reports/oils_report_param_editor.js, line 56

when I have selected a "substring" transform for a field. Same symptoms, my folders for saving the report definition and output are missing, as is the value of the substring I've selected.