Module needed and not found

I ran an auto-update yesterday (version SNAP 5.0 - Windows 7 64bit ) and now receive the following error when launching SNAP

“Warning - could not install some modules: Sentinel-2 Toolbox Kit Module - The module named org.esa.s2tbx.s2tbx.reflectance.to.radiance.ui was needed and not found”

The only options I have are ‘disable modules and continue’ or ‘exit’.

Any suggestions?

Thanks,

Conor.

Update - I seem to be getting other errors too - maybe a corrupt/failed update? I get this warning immediately upon load

java.lang.NoClassDefFoundError: org/geotools/feature/simple/SimpleFeatureTypeBuilder

and this whenever i try and load a S2 L1C granule.

java.lang.ClassNotFoundException: org.geotools.referencing.crs.DefaultImageCRS