Error after built in upgrade to 5.6 from 5.5.2.1

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My upgrade to 5.6. failed utterly!!

I used Softaculous on my web suppliers site.
I get the following error after the installation completed, it seems like a column in the database is missing...:

mysql error: [1054: Unknown column 'Blocks.btCachedBlockRecord' in 'field list'] in EXECUTE("select CollectionVersionBlocks.isOriginal, Blocks.btCachedBlockRecord, BlockTypes.pkgID, CollectionVersionBlocks.cbOverrideAreaPermissions, CollectionVersionBlocks.cbDisplayOrder, Blocks.bIsActive, Blocks.bID, Blocks.btID, bName, bDateAdded, bDateModified, bFilename, btHandle, Blocks.uID from CollectionVersionBlocks inner join Blocks on (CollectionVersionBlocks.bID = Blocks.bID) inner join BlockTypes on (Blocks.btID = BlockTypes.btID) where CollectionVersionBlocks.arHandle = 'Main' and CollectionVersionBlocks.cID = '124' and (CollectionVersionBlocks.cvID = '2' or CollectionVersionBlocks.cbIncludeAll=1) and CollectionVersionBlocks.bID = '14'")

Durator