Issue loading file with colon in directory name

[astrofrog]

I ran into an issue when trying to load a file with a ':' in the directory name:

'Orion/O:IR Images/Orion_A_J_3x3.fits'

when this happens, it looks like SharedGlueSession.add_data gets called with file_path set to:

IR Images/Orion_A_H_3x3.fits