I am a seasoned Heroes player and map maker in H2,3,4 but just recently installed Heroes 5. I updated with all patches in sequence through 1.05.
When I try to make a map -any side etc - I cannot resolve the error 'Several heroes have no names' Even though I have given them different names in the object properties, etc.
When I run the game and select my map the 'Start Game' option is not enabled. (maybe due to above error maybe not)

Has anyone created a successful single player map with patch 1.05? Is so, How?
Thanks

I have created maps successfully now. Here are some of the reasons I had the errors, I'm sure there are others but maybe this will help some folks.
1. When you create a new map go to view/map properties/heroes tab and select all the heroes. This is what fixed my problem.
2. I have seen plenty of maps that use some of the heroes but not others and they are not in sequence - however I had a map that became corrupted because I changed a town player from player 4 to player 6 to change the necromancers color to teal, but the Start Game option went away and would not come back until I changed the town back to player 4 (yellow). That gave me players 1 thru 4 in sequence with none skipped. Like I say that shouldn't be a problem but it caused me a couple hours pulling my hair out so if you run into a similar issue try that.

3. When Scripting - if you get that far, Adding your message to the resources files does not always make it recognized by the MessageBox function. Edit the text again or delete and re-add it until you get it to work. This one is very frustrating. Once you get one to work. Use it to test new MessageBox scripts first so you know the messagebox is working, then change it to your new message. That way if it quits working you will know it is the text file and not the script code.

Good Luck the editor is frustrating and buggy,but very powerful. Look at existing maps to get examples for scripts.