[mary-users] x2x : warning: input data is over the range of type 'short'!

[Neptun Sun]

Hi,
I am using these tools versions for generation new voice with marytts:

HTK-3.4.1
HTS-2.2_for_HTK-3.4.1
HDecode-3.4.1
hts_engine_API-1.05
SPTK-3.4.1
OS version is  Ubuntu 32 bit

But during "start synthesizing waveforms (1mix)" step I am getting below
warning for a lot of files (.mgc and .lf0):
Synthesizing a speech waveform from gen_2225.mgc and gen_2225.lf0...done
Synthesizing a speech waveform from gen_2246.mgc and gen_2246.lf0...done
Synthesizing a speech waveform from gen_2263.mgc and gen_2263.lf0...
x2x : warning: input data is over the range of type 'short'!
x2x : warning: input data is over the range of type 'short'!
x2x : warning: input data is over the range of type 'short'!
x2x : warning: input data is over the range of type 'short'!

PS:
not getting "unable to open mixer /dev/mixer hts "
I am using only MGC, not MGC-LSP
use x2x with option -o

dont know where is my problem?
and what will be negative effect of this warning during new voice
generation ?
Thanks for answers.
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