I recently added the eternia shards (and other) dlc onto my account to top up what I already had using a code from the humble bundle.
The library lists the various dlc's as either steam or retail which makes sense but once in game if I go to the eternia shards section for parts 1-3 instead of go I've only given the option to get them which opens the steam store page. Other dlc like teh summoner is there and working just fine the issue just comes along with the eternia stuff.
Anyone else had this issue and if so how did you get them to register or play?
Editting in what I found to be a solution to this.
Backup the game, delete local content and restore from the backup. I suppose if you've a decent connection then just redownloading would do the same but the backup sorted it for me.