Were you able to ever use the IDE without something like this happening, or has this been happening all the time with Angular IDE?
Even if Angular IDE does lock up, I wouldn’t know why the link to the program itself would be removed – this is not something the IDE would do. From what you describe, it looks like an external process is interfering with the installation, like an anti-virus or other security software. Do you have any such software installed on your machine?
Could you please let us know what OS you’re on and what version of Angular IDE you are using?
Thanks!