Illegal operation on a directory, read failed

[PawelAdamski]

After switching from brunch 2.6.0 to 2.6.5 I get following error

/home/pawel/Repository/........client/node_modules/brunch/lib/fs_utils/file_list.js:196
        if (error) throw new Error(formatError('Reading', error));
                   ^

Error: undefined of Error: EISDIR: illegal operation on a directory, read failed. 
  at /home/pawel/Repository/....../client/node_modules/brunch/lib/fs_utils/file_list.js:196:26
  at /home/pawel/Repository/....../client/node_modules/fcache/index.js:19:23
  at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:368:12)

I attach brunch logs and my package.json
logs.txt
package.json.txt

I'm using Ubuntu 14.04

[PawelAdamski]

I have the same problem with brunch 2.7.2

[bcat-eu]

This might happen when trying to use unsafe paths, something like import module from "module", replacing it with import module from "./module" should fix it.