If we are lucky then there will be some java stacktrace written to stderr. You may apply the following steps to help us identify the problem:

1) Download this plugin and place it under "C:\Users\your_username\eTeks\Sweet Home 3D\plugins".

2) Start SH3D and reproduce the problem, then close SH3D (press cancel if required).

3) Open the file "C:\Users\your_username\eTeks\Sweet Home 3D\log.txt", copy the content and post it here (please use the Code button to format the text).

P.S. for Emmanuel: sorry, we have written at the same time.