I've just installed APEX 5. And lo, the base http://localhost:8080/apex/ screen is blank, as is the http://localhost:8080/apex/apex_admin screen.
And http://localhost:8080/i/apex_version.txt returns "Not found".
And yes, I have run the load image script:
SQL> @apex_epg_config.sql C:/Oracle
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
. Loading images directory: C:/Oracle/apex/images
Directory created.
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
Commit complete.
Directory dropped.
timing for: Load Images
Elapsed: 00:05:43.69
PL/SQL procedure successfully completed.
Commit complete.
And to prove the images were loaded:

I have also run @apxldimg.sql but this also makes no difference (it appears to just load the images again).
And:
SQL> select comp_name, version, status from dba_registry where comp_name ='Oracle Application Express';
Oracle Application Express
5.0.4.00.12 VALID
This appears to be a fairly common problem, but all of the responses say "run the load image script". Which I've done, about 5 times now, even changing the directory where the images had initially been unzipped to.
But no dice. It's. Not. Working.
Which is. Driving. Me. Mad.
Can anybody help please? Thanks a lot.