I am told that one of the Lib Dems groups most opposed to doing a deal with the Tories was its Scottish MPs. Their view was that Scotland had voted massively against the Tories and that any party seen as their representatives in Scotland would be massacred.
This has set off chatter in Tory circles. There was already irritation that the party has a majority in England and Wales but was still having to compromise on issues that have been devolved to Scotland. But to not be able to make a coalition deal because of your unpopularity north of the border is to add insult to injury.