I use WinNT 4 workstation & Icemcfd mesh editor 4.1. I'm working on the 2Dpipe junction hexa tutorial from icemcfd site, and every time I choose to start hexa interactive and press with No Blocking button in the blocking file window, I get the following error message>> while a small window titled guibase is initiating it gives this error>>

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Error invalid command name".e.buts.m" while executing "$fname.m add radiobutton -label [lindex $ 0] -variable project_type -vlaue [lindex $ 1] -command "mesh_up_to_date 1; change_projection""

(procedure "make_display_window"line 172)

invoked from within "make_display_window"

(procedure "make_tool_windows"line 2)

invoked from within "make_tool_windows"

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Thanks in advance for any help you may give.

Danial

Thanks to Ben Problem was solved. it was due to bad resolution 600x800 and may be bad graphics card. Thanks Ben for all your attempts to help others. Danial.