that was my answer to the other customer 
about your problem : how did you disable ping buy and pong buy?

Your file is very big (near 1 millions lines) but from line 7979-7980

I found :
2017-10-02 16:05:38| PPA : Pong Buy  Creation Active : true
2017-10-02 16:05:38| PPA : Pool Sell Creation Active : true

And process status has never changes since this line.

So the problem is BEFORE that line? Log is not complete and start from an already run algorithm.
Can't you try to reproduce the problem in a new log and send me a little log?

I don't think there's a problem, but i would like to be able to explain you about the log. With 1 millions lines log it's not easy (my pc is likely to frooze during search procedure with a 80MB log file)

ok thanks.
don't forget that STOP PING/PONG etc options works on the PING-PONG AUTOMATED PROCESS
it doesnt effect orders created directly from the GUI by you.
In other words you can STOP PING CREATION and ADD 1 PING ORDER from the GUI

You should DISABLE the CREATE PONG PROCESSES (buy & sell).
In that case if a tra occurs over one of your ping, then the trade will remain in the Trade Pool and no pong will be created.

I'll give that a try, thank you.

Invalid date?
It's the first time i heard about that. Can you copy/paste log about this?

@stoner19
Just an idea, if you dont want to mess with the algorithm, in case you have more orders in that market that you actually want CAT to keep ping-ponging:
Try creating the spread of orders and then remove them from CAT only - not the exchange. CAT will just forget about them and will go on with the rest.
Be sure to have "Add 0.00% (some coin) into Sell Pool Every Pool Lookup" (or into Buy Pool accordingly) so it will not create new orders from the pool.

you should have already receive the 5.1 version via PM.

Oh, that's not a terrible idea. I might try it that way!

Sampey, another feature request for the next release...a search bar in the "My Balances" and "Market List" tabs.

Balances, I'm not sure it is really important.... I don't know, maybe it is because I am focusing on specific pairs on each exchange and I have relatively small balances on other coins.
But a search bar in Markets List would be nice to have when the exchange has a lot of pairs.