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If wetmaps are not displayed or created correctly it is very likely that the UV grid of your (external) object is either not unwrapped or wrong. Some plug-ins plugins also do not allow the use of a texture tag while exporting the object(s). In other words textures have to be removed before the object is exported.
In the "Wetmap Creation" chapter you will find a tutorial about to use WetDry textures.
Load Texture
If you want to apply a texture map then you are able to load an appropriate file with this dialogue. When you reopen a scene with textured nodes, RealFlow will search for image maps in the applied folders and directories. If the assigned map cannot be be found you will see a default UV texture.
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