CDAWeb multi variable load doesn't work with virtual variables. For example:
vap+cdaweb:ds=OMNI2_H0_MRG1HR&id=DST1800&timerange=Oct+2016 and
vap+cdaweb:ds=OMNI2_H0_MRG1HR&id=KP1800&timerange=Oct+2016
work, but
vap+cdaweb:ds=OMNI2_H0_MRG1HR&id=DST1800;KP1800&timerange=Oct+2016
does not. (Actually it suppresses an error, too.)
This is fixed.
See also https://sourceforge.net/p/autoplot/bugs/2510/, which is a redundent ticket.