Ok im not to good with the whole concept of VB (Visual Basics) but i decided to test my VB to see whether or not it was indeed a bug on KMC's behalf or if the problem was more local to your computer.
TESTING
^Above is a test of KMC's VB HTML. As you can see the test has proved succesful so i think the problem you are experiencing has something to do with your workstation(although i am not 100% positive). However you may wish to view the page specially created to handle KMC's VB program it can be found when you come to compose a message and is located near the VB options (it is titled 'vB Codes Explained'),within this sub page you may find an answer to your problem,it also contains a series of useful tutorials to help you get to grips with VB.
Hope this has been of some use to you.