[xcrysden] problem with pressing right mouse button

[PANGO]

Dear xcrysden experts

I'm a novice user of xcrysden and I have installed xcrysden but when I
press right mouse button on the main window, it closes and I get this
error :
 --------------------------------------------------------------------------------------------------------

 X Error of failed request:  BadValue (integer parameter out of range for
 operation)
   Major opcode of failed request:  91 (X_QueryColors)
   Value in failed request:  0xff000000
   Serial number of failed request:  5227
   Current serial number in output stream:  5227

 ----------------------------------------------------------------------------------------------------------

 Regards
 Erfan
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