I run the program as administrator, try to save the exported burst to the folder that the .exe is in, and get nothing.  It only allows me to save a render file rather than a .png?  Even though I select PNG, when it takes me to file browser it only allows the above.

Upon export, the program hangs for a few seconds, but no files are created.

Exporting to the same folder where the exe is located is known to cause issues, please try a different folder to check if it works.