When I try to log into my site, the site crashes as soon as I click on the username box - I don't even to type anything. A 404 error message appears.
Other themes are fine.
Doesn’t look right to me at all but then again I don’t know what your trying to achieve at your end.
If you want SP to be your main site and you have not done too much work I would do a complete reinstall of WP, SP and a new database to boot.
404 means page not found, that doesnt mean its crashed just cant find what your looking for.
sounds a bit bono
lol guess it’s all gone a bit pete tong!