Error 100 - Invalid JSON returned

[dyluck07]

Getting Error 100 - Invalid JSON returned intermittently on the Products API.

I am controlling the loading and updating of products through the API. For the most part it works, but I get this error: 100 Invalid JSON returned for ---

I've checked the JSON syntax and nothing is wrong. I could rerun the exact same product load and it works perfectly fine.

There is no other information other then this.

[Valraven]

I have this issue as well. On another store it works perfectly fine, but on another it doesn't and returns error 100 invalid json returned