My issue is that, although the blocks are fine when placed on the world (as you can see on the screenshot, the colors are ok, and you can see the water behind the blocks) they show as transparent blocks on my hand and on the inventory:
Spoiler
Show
These are the configuration files I made. Tiles 0 to 46 are the frames, the others are the glass.
Spoiler
Show
glass_1.properties:
matchBlocks=3003
metadata=1
tiles=0-46
method=ctm
glass_1a.properties:
matchBlocks=3003
metadata=1
tiles=0-46
renderPass=2
method=ctm
glass_1b.properties:
matchBlocks=3003
metadata=1
tiles=59-105
renderPass=3
method=ctm
matchBlocks=3003
metadata=1
tiles=0-46
method=ctm
glass_1a.properties:
matchBlocks=3003
metadata=1
tiles=0-46
renderPass=2
method=ctm
glass_1b.properties:
matchBlocks=3003
metadata=1
tiles=59-105
renderPass=3
method=ctm
https://www.dropbox.com/s/6tocuxmsyuoke2r/ctm.rar?dl=1