[GSAS-II] Error during integration of SAXS data

[Connolly, Matthew J. (Fed)]

Hello,

In the newest version of GSAS-II, I am getting an error in GSASIIimage.py on line 673: RuntimWarning: invalid value encountered in sqrt C=180.-tth-npacosd(np.sqrt(1.-sinB2)).

Until recently I have continued using an older version 4909. The same image file, and same control file, integrates nicely with this version.

Related question: In the GUI there is a way to revert to previous version. Is this also possible somehow in the conda install on linux?

Thank you,

Matthew Connolly
NIST
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