MODx & Gallery component - how to handle non-existing albums?
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Referrencing non-existing albums in the Gallery component results with the following warning & error:

    Warning: Invalid argument supplied for foreach() in 
    /home/user/domain.com/core/cache/includes/elements/modsnippet/17.include.cache.php on line 106

    Fatal error: Cannot use string offset as an array in 
    /home/user/domain.com/core/cache/includes/elements/modsnippet/17.include.cache.php on line 165

And here is how I reference albums:

    [[!Gallery? &album=`[[*alias]]` &limit=`20` &thumbWidth=`90` &thumbHeight=`90`]]

Album names match page's aliases. Everything works fine if albums exist - I would like to display blank album (no content), if no matches found.

Any ideas? I am using MODX Revolution 2.2.4-pl (traditional). 

Thanks, Luke