Doesn't work with grunt-newer

[zipper]

When used with grunt-newer, plugin throws error "Warning: Cannot read property 'indexOf' of undefined Use --force to continue.". It is probably caused by non-standard src-dest mappings used by grunt-data-uri.

Problem is, grunt-newer always passes files in options, even though src and dest were set. It assumes, that whatever plugin it calls, it supports files array format.