Fixed #1428, an issue with preview the (empty) project placeholder.
Fixed #1428, an issue with preview the (empty) project placeholder.

The code treats this placeholder the same as any other proejct and attempts to open it, leading to a parse error.

jmoenig/Snap--Build-Your-Own-Blocks,ericrosenbaum/BeetleBlocks,jmoenig/Snap--Build-Your-Own-Blocks,ericrosenbaum/BeetleBlocks