hey nice first release 
u can use simba tags btw to make your script easier to read. Put: [SIMBA] (your script here) [/SlMBA] around the script.
Scripting wise:
1)
u should pick your colors with AutocolorAid => tutorial by yohojo (click me)
This'll give you way more accurate results. Thus improving the script's stability!
2)
The following code is a potential infinite loop: meaning it could get stuck inside this loop.
To get rid of that u could use a timer (look below)
Simba Code:
repeat
wait(400+random(250));
AntiBan;
Until not IsUpText('ew') or (InvFull);
Simba Code:
markTime(t);
repeat
wait(400+random(250));
AntiBan;
Until (not IsUpText('ew')) or (InvFull) or (TimeFromMark(t) > 10000);
This will exit the loop after 10 seconds (calculated in ms), preventing it to get stuck in the loop!
don't forget to declare t in your variables as an integer, or you'll get the 'unknown identifier' error.
There is another potential infinite loop inside the same procedure, can u spot it? 
3)
Next step is getting your script to drop all the logs and repeat the chopping process