Hello,
the reason behind the error "Invalid extension update" is that the AIO component updated XML is left on 3.0.18 version so when virtuemart goes to 3.2.0 the AOI extentions are still left on 18.
Check it our here:
http://virtuemart.net/releases/vm3/virtuemart_aio_update.xml
<name>VirtueMart AIO</name>
<description>VirtueMart AIO Component</description>
<element>com_virtuemart_allinone</element>
<type>component</type>
<version>3.0.18</version>
<infourl title="VirtueMart URL">
https://virtuemart.net/news/latest-news/479-virtuemart-3-2-cached-and-optimized
</infourl>
Of-course the solution is to download the latest AIO and updated it manually from here:
http://dev.virtuemart.net/projects/virtuemart/files
Thank you. Corrected, .... But vm3.2.1 is already knocking at the door