I cannot get past 45% on upgrade to 5.0.2

Have tried all the proposals on here, no luck. Truncated the ACl table but then cannot get into ACL to save config as it goes straight to upgrade.

If I try directory upgrade it fails at Initializing Database with message: Sorry, there was some errors when trying to extract the queries.zip file. Please contact our support team

Any urgent ideas?

Thanks

Cliff