Import/export Pier widget in Pharo 1.1.1

I load Seaside, Pier and addons with the script below. Most things (at least those I've tried) works, but Import/Export widget. It simply ignores all clicks on Import and Export buttons. What's wrong (how is it possible?!) and how can I resolve this issue? BTW: Grease, Seaside, Magritte, Pier tests are green.

TIA

Gofer new
    squeaksource: 'MetacelloRepository';
    package: 'ConfigurationOfSeaside30';
    load.
(Smalltalk at: #ConfigurationOfSeaside30) load.

Gofer new
    squeaksource: 'MetacelloRepository';
    package: 'ConfigurationOfPier2';
    load.
(Smalltalk at: #ConfigurationOfPier2) load.

project := ConfigurationOfPier2 project.
(project version: '2.0.7') load.

(Smalltalk at: #ConfigurationOfPier2)  project latestVersion load: 'Pier-Tests-Model'.

(Smalltalk at: #ConfigurationOfSeaside30) project latestVersion
    load: #('Magritte2 Tests' 'Pier2 Tests').

   
Gofer new
    squeaksource: 'MetacelloRepository';
    package: 'ConfigurationOfPierAddOns2';
    load.
(Smalltalk at: #ConfigurationOfPierAddOns2) project latestVersion load: 'ALL'.

PRDistribution register.

--
Dennis Schetinin