Forum OpenACS Q&A: Response to installation trouble with OpenACS3.5.2 on AOLServer 3.4.2

It needs to be "1" not "t" (booleans are represented by 0 and 1 in Tcl, just like C, rather than "t" and "f" used by PG).

Best bet is that you're not not sourcing the param file from your nsd.tcl startup script.  You need something like

source "/web/parameters/<name>.tcl"

and make sure you've got the full path, that the user running AOLserver has read privs for the file, etc.