Hi,
 
I plan to use a managed bootstrapper application that instantiates a WPF UI to 
use with Burn chainer. I'd like to block users and provide a custom error 
message if they don't have .Net 4.0 installed. I have two questions on this -
 
1. Given that my bootstrapper itself depends on .Net 4.0, how can I implement 
this check? 
 
2. Currently, I get this message in the logs when I run such a installer on a 
machine with no .Net installed - 
 
  Loading prerequisite bootstrapper application because managed host could not 
be loaded, error: 0x80070490.
  Error 0x80070490: Failed to read the NETFX Package identifier from engine 
variable.
  Error 0x80070490: Failed to start bootstrapper application.
  The prerequisites were not successfully installed, error: 0x0. The 
bootstrapper application will be not reloaded.
  Error 0x80070490: Failed while running 
  Error 0x80070490: Failed to run per-user mode.
 
  Is there a way I can add a custom message to the log in case there is no .Net 
installed on the machine?
 
I'd really appreciate any pointers in this regard.
 
Thanks,
Shruthi                                           
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