Zandronum

Help when I try to play project brutality 3.0 I get this error:
Script error, "Project Brutality 3.0 Test 7-22-17.pk3:decorate/weapons/slot1/melee.dec" line 260:
Sprite names must be exactly 4 characters
Help me, I do not know what to do and I do not understand this much

postscript: I have Zandronum 3.0 and I do not speak English very well

what idiom you talk? XD i spanish

, first you have the most new version of zandronum?

Yes, I speak Spanish, but zandronum will not let me write in Spanish.
I have version 3.0, the last one (I think)

try using the testing version of zandronum 3.0, here is a link to the list of testing versions of zand 3.0 https://zandronum.com/downloads/testing/3.0/