Will an XDK on 21256.18 work with the SDK of 21256.3?

Will it work fine, or are there complications?

 

.18 is newer than .3 (Microsoft please stop this naming scheme). You should be fine.

In MS' mind its counting revisions by 1 decimal. .0 .1 .2 .3 .... .17 .18. Normally that would be read as .30 vs .18 but no, it is in fact .03 vs .18.

You'll be fine.

 

Yeah, this naming scheme must stop. (Although i assume this scheme was used because no major changes have been made since 16197)

 

Yes it'll work.

The thread served its purpose

Once again, yes it'll work.