Ok guys, found the problem :
This problem could occurs only if your Nonce is "broken"
Nonce is a progressive number that exchange wants inside any Private Api call.
Nonce used by CAT is always higher than previous nonce (because is your local time stamp expressed as milliseconds).
Poloniex API have (sometimes) problem about this Nonce : you get an error message like "You send me X i was waiting for Y"
In this case, CAT Parse Y, then start use Y as nonce, and increasing Y Value instead of local time as milliseconds.
Something changes yesterday on Poloniex API system : Errors are returned in the Http Error Stream and not in the Http Output Stream.
This is why CAT is not able to read the message and continue works.
This is a bad behaviour from Poloniex Exchange : you must not change your API Version system after put in production environment.
I Mean, if API System V1 works in a way, if you change something you must create a V2 API System.
This is what happens if someone interface following a set of rules and you change that set of rules.
Solution :
Give me no more than 48 hours and i will release 4.7 Version.
This is the best i can do
Is there a free copy