Sample rate non-functional on Cubox-i4-Pro under 1.2beta

Like the topic says, on my Cubox-i4-Pro running Cubox-1 1.2Beta, the “Sample rate converter” dropbox in the “Playback” webpage is non-functional. It provides three selectable options, by default displaying the “Fastest sinc interpolator” option. Selecting any of the three options, and clicking “save changes”, results in a hung website. The only way to restore access to the website is to power cycle the device. Upon said power cycle, the “Sample rate converter” selection remains “Fastest sinc interpolator”, regardless of which cycle had been selected prior to hang/power-cycle.