Hi,
When u uploaded into the VisualRF the floorplans:
Did u used jpeg/png/bmp or other picture format - and entered the right dimension of each floor (including height?)
Did u used CAD/DWG file.And u checked the dimension - that they are right?
check those details - That might be your issue.also be sure the use the lastest visualrf version.
me.
BTW:
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I also attached userguide for VisualRF (read it - it will give u good info)