ChromeCacheView v1.70 - Cache viewer for Google Chrome Web browser
Copyright (c) 2008 - 2016 Nir Soferhttp://www.nirsoft.net/utils/chrome_cache_view.html
"Error 2: The system cannot find the file specified"
The "Simple Cache Backend for HTTP" is a new cache. It relies on the filesystem for disk space allocation and it writes your cache in a different format, 1 file per file. It is indeed better, BUT...
The program relies on using the old format that uses an indexable database of basic cache files needed to get the cache information, and they are missing: data_0, data_1, data_2, data_3 ...
Bottom line, the new "simple" structure is currently incompatible with the v1.70 of ChromeCacheViewer. (hopefully this will change)
Toggling the flag will clear your cache, so don't do that if you are struggling to retrieve something from cache. Instead, go to chrome://cache, and follow the instructions in the blog post directly below this one to retrieve the file.
ABOUT the simple-cache-backend (nerdy) : https://www.chromium.org/developers/design-documents/network-stack/disk-cache/very-simple-backend