[gmx-users] umbrella sampling

[Kingsley Theras Primus Dass .]

Dear all,

I am trying umbrella sampling. when I gmx wham command I get the following
error.  I checked my tpr.dat and px.dat files, everything seems to be okay.
but still, i get this error. can you suggest some solutions?







Found 22 tpr and 22 pull position files in tpr.dat and px.dat, respectively
Reading 11 tpr and pullf files
Automatic determination of boundaries...

-------------------------------------------------------
Program gmx wham, VERSION 5.1
Source code file:
/home/hsulab00/Documents/gromacs-5.1/src/gromacs/gmxana/gmx_wham.cpp, line:
1800

Fatal error:
. Should be tpr, xvg, or pdo.0.tpr

For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors
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umbrella0.tpr
umbrella1.tpr
umbrella2.tpr
umbrella3.tpr
umbrella4.tpr
umbrella5.tpr
umbrella6.tpr
umbrella7.tpr
umbrella8.tpr
umbrella9.tpr
umbrella10.tpr
umbrella11.tpr
umbrella12.tpr
umbrella13.tpr
umbrella14.tpr
umbrella15.tpr
umbrella16.tpr
umbrella17.tpr
umbrella18.tpr
umbrella19.tpr
umbrella20.tpr
umbrella21.tpr
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umbrella0_px.xvg
umbrella1_px.xvg
umbrella2_px.xvg
umbrella3_px.xvg
umbrella4_px.xvg
umbrella5_px.xvg
umbrella6_px.xvg
umbrella7_px.xvg
umbrella8_px.xvg
umbrella9_px.xvg
umbrella10_px.xvg
umbrella11_px.xvg
umbrella12_px.xvg
umbrella13_px.xvg
umbrella14_px.xvg
umbrella15_px.xvg
umbrella16_px.xvg
umbrella17_px.xvg
umbrella18_px.xvg
umbrella19_px.xvg
umbrella20_px.xvg
umbrella21_px.xvg