I am using 096 RC3 with ditto 202
What version of Ditto are you using?
It works on http://shop.fast-site.net/9.html
Moreover if I am right Ditto doesn’t interpret [*xyz*] in its call.
For more information on Ditto Filtering, please read: http://ditto.modxcms.com/tutorials/basic_filtering.html

not sure to understand your pb but You should add the id parameter to your ditto call.
the start will be applied on the call from which it’s been activated.
it’s don
1.[!Ditto? &id=`call1` &summarize=`1` &parents=`[*id*]` &tpl=`portf_chank` &paginate=`1`!] - i use it for gallery
2.[!Ditto? &parents=`3` &tpl=`li` &debug=`1` &paginate=`0` &summarize=`50` &depth=`2` &filter=`tvclients,[*clients*],1|pagetitle,*pagetitle*],2` !]
P.S: there is an extra space in your filter ", 1". You should remove it.
I did’t understood how to do it.
and then add the call1 prefix to your pagination placeholder.
I am using [+pages+] placeholder for paginate
[!Ditto? &summarize=`1` &parents=`[*id*]` &tpl=`portf_chank` &paginate=`1`!]
<div class="pages">
<span class="left">[+call1_pages+]<span class="ditto_currentpage"> </span>
</span>
<span class="right"><a href="[*pic_link*]" title="[*pic_title*]">посмотреть сайт</a></span> </div>
<div class="client">
<h1>[*pagetitle*]</h1>
<h2>Клиент: [*clients*]
</h2>
</div>
<div id="col1">
[*content*]
<p class="teg">Теги: {{chank_tags}}</p>
</div>
<div id="col2">
<strong>Eщё проекты этого клиента</strong>
<ul>
[!Ditto? &parents=`3` &tpl=`li` &debug=`1` &paginate=`0` &summarize=`50` &depth=`2` &filter=`tvclients,[*clients*],1|pagetitle,[*pagetitle*],2` !]
</ul>
Ditto 202 MODX 096 rc3 &filter=`clients,....` or &filter=`tvclients,....` it does not matter.
Could you please provide your ditto version ?
If you are running Ditto 2 you don’t have to prefix the tv anymore.
So you filter should be &filter=`clients,....`