70725 refers to the Content ID. You can see this in SQL by plugging it into tblContent.
133679 refers to the work version. This can be viewed in SQL by querying tblWorkContent. This will be more useful because you can get the name of the resource and url segment it refers too.
You normally get an object reference error because the content you are trying to import doesn't have a value for a property thats marked as request on the content type.
Best to find the Content in question in the db and then compare the data you have in .episerverdata to see what its missing according to your target environment.
Thank you Surjit! The following SQL seem to give the relevant information:
select * from tblContent where pkID = 70725
select * from tblWorkContent where pkID = 133679
It seems to point to a submit button. I have yet to understand why that block would cause an exception during import, but now I at least have a place to start digging.
When trying to export a page hierarchy from our production environment and then import the resulting ExportedFile.episerverdata file to our acceptance test environment I get the following error:
[Importing content 70725_133679] Exception: Object reference not set to an instance of an object.
I have no idea what 70725_133679 is referring to. Is there a way to look this up, e.g. via an SQL query against the "EPi" database?