Hi I really need some help, I made a group inside a persistent symbol into a symbol and that was not possible as it seems, because software crashed and every time I open my file it crashes again.
Could anyone at hype look at my file and reverse that mistake or fix the software? 
Sorry you’re hitting this!
Could you please submit an issue from within Hype, using Help > Report an Issue? When you do so, please also include your document in the Issue Reporter’s Attachments section, and ensure that the “Send logs, preferences, and system information” checkbox is checked. You can attach a document without opening it.