How can I read local files from JavaScript with Firefox

[Pregnancy]

I have some standalone JavaScript code that I've written to use with MaxMSP (a visual language for MIDI and DSP) that I need to debug.I downloaded WebStorm to try it out. When I try to execute code that reads a local file, I get the following error:Exception... "Security error" code: "1000" nsresult: "0x805303e8 (NS_ERROR_DOM_SECURITY_ERR)"I know people have seen this before and I have tried all the suggestions I found to bypass security and enable local file reading from Firefox but I'm still not able to get this to work.I'm wondering if something has changed in recent versions of Firefox that make all the old suggestions useless.Would appreciate any suggestions.Thanks,David