I'm getting that one also but the good thing is that there are no more hundreds of compile errors like there used to be.

I opened this thread in August: "MT5 compiling errors" and there are several samples of the issue in the thread. No answer from support so far.

Lately even the platform compiler has stopped making ex5 files/ea's which would run on MT5. Right now it seems to be so that the MT5 part is pretty much unusable and therefore I think this issue should be publicly addressed here instead of people sending you private emails.

This has been going on since August and the support is not even answering these post.

Receiving a lot of compile errors after the recent MT5 update:
unresolved static variable '_externs::inp12_Group' Ace IG MT5 2.21-2-6.mq5 1028 32
unresolved static variable '_externs::inp13_Group' Ace IG MT5 2.21-2-6.mq5 1029 32

The way to do it is to always start again from the initial trade after all trades in the group have been closed. It should not matter if they have been closed in loss or profit. This is how most martingale EA's work.
Hopefully this change can be implemented soon to the system as it should be a relatively small issue to fix. It could also be added as on option to the buy/sell blocks.

I'm having the same issue as mentioned in this thread: https://fxdreema.com/forum/topic/4761/close-at-martingale/4

I think it is incorrect to open the next trade based on the last closed. Instead you should look for the initial opened trade for the group. I'm running two groups, one for buys and one for sells. Opening based on the last closed makes the strategy useless as there should always be a reset when all trades for the direction are closed. Maybe there is a way to do this with some blocks but I'm using the martingale setup available in the trade options.

Started suddenly to receive these warnings: check operator precedence for possible error; use parentheses to clarify precedence Fx IG EA 1.0-5-1-12-2-2-1-2.mq4 4315 58
This is the line:else if (type == 0 && price_close >= e_attrTakeProfit() || type == 1 && price_close <= e_attrTakeProfit()) {close_type = "tp";}
Using version 5.0 build 1961

Started to receive these errors after MT4 update to version 1160:
'TesterHideIndicators' - override system function TSEA5-18.mq4 12583 6
'TesterHideIndicators' - ambiguous call to overloaded function with the same parameters TSEA5-18.mq4 503 2
could be one of 2 function(s) TSEA5-18.mq4 503 2
built-in: void TesterHideIndicators(bool) TSEA5-18.mq4 503 2
void TesterHideIndicators(bool) TSEA5-18.mq4 12583 6