Help scaling textures converted from Corona to Vray

[katrina_hall]

I have been sent some files which I have had to convert from Corona materials to V-Ray.

The converted materials don't seem to be scaled correctly. How would I fix this? Have tried a UVW modifier. The material was created using 2 plugins, Floor Generator and Multi-Texture.

I'm also having trouble with some of the textures not rendering correctly - they become invisible when rendered but are visible in the viewport?

[hermit.crab]

Best you simplify and send the scene so we can take a look.