There is an error in the frame caching code; the file path is taken from the cache file, which causes errors if multiple platforms try to address data or if data is moved

[stevevanhooser]

[stevevanhooser]

fixed this, but in a suboptimal way

[stevevanhooser]

better way is to never store full paths in preview image .mat files to begin with and correct them when they are found

[stevevanhooser]

therefore I'll leave issue open