"GRANNY: r:/granny/rt/granny_file_info.cpp(145): File has run-time type tag of 0x8000000f, which doesn't match this version of Granny (0x80000010). Automatic conversion will be attempted."
As you know.. we can see sometimes this tag "0x8000000f" on buildings.
For untouched files on cities is for this sign:

Bad sign: Zone\ymir work\zone\b\obj\sign.gr2
Good Sign: Zone\ymir work\zone\ghost\obj\sign_01.gr2
But every file has different texture (sign_01 is ugly). I already fix that for you.
Just download my sign.gr2 and copy to "Zone\ymir work\zone\b\obj" and enjoy, or change the path texture to the original one.
After the operation no more granny "0x8000000f" error in the cities.

Credits: My mother ..for born me.