Gnuplot-wxt Error on Cygwin_x86

[Tatsuro M. <tma...@ya...>]

Hello

I build cvs version of gnuplot (ChangeLog 2014-04-18 ) with wxt terminal.
The wxGTK-2.8.12 is used.

gnuplot> plot sin(x)

The plot is successful but an error dialog appears and says:

Cannot convert from the charset 'Unknown encoding (-1)'!

The dialog is attached.

Any suggestions?

Regards

Tatsuro