# Steps to reproduce
Try to open any xaml file
# Expected behavior
File should open in xaml viewer
# Actual behavior
throws error "object reference not set to instance of an object"
# Supplemental info (logs, images, videos)
Xamarin Studio 6.1 Build 4963
# Test environment (full version information)
Can you attach the log files from the session where it crashed?
Created attachment 16322 [details]
Xamarin Studio 6.0 log files
Attached Xamarin Studio log files
Hi Mir Majeed
I have recently fixed an issue with Xaml previewer that could throw a NRE
Thanks for the info. When will this fix be available in the alpha channel?
*** Bug 42190 has been marked as a duplicate of this bug. ***
Fixed in version 22.214.171.12472 (master)
Author: Alan McGovern
Commit: 404ebeaa09454d722328377c1fc27f4e391f1d65 (xamarin/md-addins)
Included in Commit: 29b256f9c105fbb1abf834c530f2f91e90a3201f (mono/monodevelop)