have you installed the new 3.5.07 over the 3.4 one?
Otherwise download and copy this version (in another location)
AWeb 3.5.07 MAXthat version, doesn't need any assign
If it still doesn't works, try to delete/rename the "ENV:Aweb3/" configuration files. (and if it will works, even the Env-Archive:Aweb3/ one)