I'm new to the forum, i hope i post this in the right section. When i try to start the applicication, i get the following error: --------------------------- Error --------------------------- #Error: Exception has been thrown by the target of an invocation. at System.Reflection.RuntimeMethodInfo.InternalInvoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean isBinderDefault, Assembly caller, Boolean verifyAccess) at System.Reflection.RuntimeMethodInfo.InternalInvoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean verifyAccess) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at ..(Assembly , String[] ) at ..(String[] ) at ..(String[] ) System.ArithmeticException: Overflow or underflow in the arithmetic operation. at System.Drawing.Font.Initialize(FontFamily family, Single emSize, FontStyle style, GraphicsUnit unit, Byte gdiCharSet, Boolean gdiVerticalFont) at System.Drawing.Font.Initialize(String familyName, Single emSize, FontStyle style, GraphicsUnit unit) at System.Drawing.Font..ctor(String familyName, Single emSize, FontStyle style) at .#..ctor() at .#.() --------------------------- OK --------------------------- I have: Xp Pro UK Framework SP1 Can someone tell me what's going on ?