Could you please create an issue with attached log in our bugtracker?
Will the problem with "ng-html2js" still persist? If yes, please file an issue in our bugtracker.
Indeed, the plugin runs karma with working directory set to the config's directory. If you find a glitch here please file an issue in the bugtracker.
Actual working directory could be found by adding extra logging to /path/to/karma/lib/server.js: "console.log(process.cwd());"
If 'commonjsPreprocessor' is specified, then 'commonjsPreprocessor.modulesRoot' is resolved against the working directory (i.e. the config's directory). Otherwise, "karma.basePath/node_modules" is assumed (i.e. the working directory isn't involved in resolution).
Sorry again. The plugin's compatible with IntelliJ IDEA 13 or higher.
About upgrading to version 13: checkout additional options.