ImportError: 'get_valid_filename'

[cefect]

A user reported the following error when installing 0.4.2

[cefect]

This error is thrown if the user attempts to 'Install from Zip' without first uninstalling the previous version, then re-starting.

Simply ignore the error and re-start QGIS and you're new install should work fine.

(this happens because QGIS only reloads the top-level modules on each plugin install... leaving all the lower-level modules in the memory as is. So the error comes from the new top-level making a call to an old lower-level module and failing. re-starting QGIS gives you a fresh load on all the modules).