My NewGRF makes the 'Query' sprite a non-normal sprite .. ??

[Snail]

Hi all,

Today I was testing the newest version of my NewGRF (French narrow gauge trains) on OTTD after heavily reworking its structure. I compiled it with GRFCodec (6.0.5) and ran it with NFORenum, which didn't pick up any major errors (except for this one, which I believe might be an OTTD feature NFORenum still doesn't recognize).

I was speechless when I saw OpenTTD (r27524, freshly compiled) quit, after giving me this rather funny error message:

What the...??

ottd_error.jpg (29.38 KiB) Viewed 1675 times

I would otherwise appreciate the sarcasm, but my NewGRF only defines trains; I'm not even dreaming of modifying OTTD's "query" sprite (I wouldn't even have the slightest idea of how to do it). The conflict, if any, must be somewhere else, and I have no idea where it might be.

BTW, the "readme" in the OTTD directory doesn't mention anything related to the "query" sprite... This is why I'm writing here.

Anyone saw this error message before? I can post my GRF here if this can help understand where the problem might be.

Thanks in advance

[frosch]

Your grf contains an action A that replaces the most crucial sprite (the fallback sprite for invalid sprites) with a recolor sprite.
Likely your GRM action D+6+A has some error.