PgAccess 0.93 is working fine with PostgreSQL 6.4.x due to some
changes in libpgtcl !
There is a small patch that you have to make in order to make it work with 6.3.x !
Replace in procedure wpg_exec the following line:
set pgsql(errmsg) [pg_result $pgsql(res) -error]
with this one :
set pgsql(errmsg) "NO ERROR INFORMATION SUPPLIED"
And it will work fine! In some error cases, you will not get the appropriate error message from libpgtcl.