Dear Claudio,
i made a fresh install on an Ubuntu 14.04 system, and the install worked mostly correct. There was some fiddling with the startup-script (config-oacs-5-9.tcl) necessary (IPv4 address), openacs is not happy about the driver name. the basic install install just acs-core, via install from repo i could install xowiki and xowf. xowf first complained about non-exisitng files from ajax helper. after installing these as well, xowf looks fine.
The forthcoming releases of NaviServer and OpenACS should have these glitches removed.
Can it be that you have a mixture of files from CVS and from the .apm files?
-gn
