Afther your help in all these issues, I realized that I should upgrade my XoWIki and XoTCL versions. I was in version 0.60 of both and I'm upgrading now to the HEAD. i had a little trouble with XoTCL regarding the file xotcl-core/tcl/05-db-procs.tcl. In line 81 I had this:

if {[db_driverkey ""] eq "oracle"} {set name [string toupper $name]}

In my PostgreSQL version, this code was making the package check for the tables in upper case. So it tried to create the APM_PARAMETERS table, and I had to make an small change in order to make it work. My modified version was like this:

if {[db_driverkey ""] eq "oracle"} {
set name [string toupper $name]
} else {
set name [string tolower $name]
}


The error disapeared and I could upgrade XoTCL without any trouble. However, I'm still facing some trouble in XoWIki upgrade. The following error message appears in my log:


Error: content #
# A sample News object.
#
my initialize -parameter {
{-page_size:integer 10}
{-page_number:integer 1}
{-summary:boolean 0}
{-date ""}
{-tag ""}
{-ptag ""}
{-entries_of en:news-item}
}
(...)

set w [::xowiki::Weblog new -destroy_on_cleanup -package_id $package_id -page_size $page_size -page_number $page_numbe
r -summary $summary -date $date -category_id [ns_queryget category_id] -tag $tag -ptag $ptag -entry_label "News Article
s" -exclude_item_ids $exclude_item_ids -entry_renderer $entry_renderer -entry_flag __no_form_page_footer -entries_of $ent
ries_of ]
$w set __page $page
$w mixin add $renderer
return [$w render]
} lead to error: Transaction aborted: unknown argument '-childof' for method 'new': valid arguments {-dbn {}} -name:require
d -parent_id:required -item_id -locale {-creation_date now} -creation_user:required -context_id -creation_ip {-item_subtype c
ontent_item} {-content_type content_revision} -title -description {-mime_type text/plain} -nls_language -text -data -relation
_tag {-is_live f} {-storage_type lob} -package_id:required


Do you have any idea about how to fix it?

i was trying to figure out, why in your installation it checks for the table name "APM_PARAMETERS" while on my installations, it checks for "apm_parameters". Fixing one symptom does not help much, since you will run into similar problems later on.

Since xotcl-core uses the table name from acs_object_types for the parameter class, i am wondering, what the following query returns on your system:

select object_type, table_name from acs_object_types where object_type = 'apm_parameter'; 

I've never had any trouble using XoWiki in this version, and in my little understanding about the package, I couldn't see any change in the ACS-Core that would afect it.

The versions of xotcl-core in cvs head has a much wider support of the acs-type system (see e.g. http://www.openacs.org/forums/message-view?message_id=1165841)
and is much tighter integrated with it. the according xowiki versions use these features. There are changes in this regard in acs-core, see e.g. http://www.openacs.org/forums/message-view?message_id=1201818 for some consequences.

unlike most other packages, the xo* packages tried in the past to work as good a possible with about all kind of openacs installations. Therefore, there are already many
package dependencies included. Try the following for a better understanding of the dependencies:

fgrep -R "ad_acs_version" packages/xo* 

As said before, the head development is based on 5.3 and cvs head. Providing 5.2 support is probably not hard, but currently, i have no time to work on that.

btw, you did not state, what version of XOTcl you are using (grep for XOTcl in your error log).