When something goes wrong

Crashes & recovery

The Studio autosaves to a separate recovery folder and never touches your own file to do it. If it stops, your work is almost always a couple of clicks away.

What	Where you'll find it
Recovery files	`%LOCALAPPDATA%\SprinkFlow\AutoSave`
Repro bundle	Ctrl+Shift+X, or Help → Create Repro Bundle
Viewport screenshots	Ctrl+Shift+D
Performance log	Help → Performance Tracker
Reload the drawing view	F5

Getting your work back

Autosave writes timestamped copies of your project to %LOCALAPPDATA%\SprinkFlow\AutoSave, in a folder per project. Each one is an ordinary .sfdp file that opens through the normal Open dialog — there is nothing special to run.

Reopen the Studio. If it offers to recover, take the offer.
If it does not, open the AutoSave folder, find your project's folder, and open the newest file in it.
Save it somewhere new immediately, under a name you will recognise, before you carry on.

Recovery files are written to a temporary file first and then swapped into place, so a crash during a save cannot leave you a half-written recovery file. Your own project file is never touched by autosave.

Alpha software should never be the only copy of anything. Save often, save to somewhere backed up, and keep the previous day's file. That advice is boring and it is also correct.

When the view looks wrong but nothing has crashed

Press F5 — reload viewport. It rebuilds what is on screen without touching your drawing, and it fixes most graphical oddities. If it does not, save, close, and reopen.

When it freezes

A frozen interface writes a stack dump automatically, so the freeze is analysable afterwards even though you could not press anything at the time. Wait a few seconds — a long operation on a very large drawing can look like a freeze and finish on its own. If it does not come back, end the process from Task Manager and reopen; the recovery banner will offer to send the note it left behind.

Known rough edge: occasionally the window closes but the process keeps running, which stops the next launch from starting cleanly. If the Studio will not reopen, check Task Manager for a leftover copy and end it. A fix for this is in progress.

When it is just slow

Switch Perf to Draft in Display & Defaults. That defers the live hydraulic work and hides node tags while you draft.
Turn off the Live hydraulics pill and calculate on demand instead.
Hide or isolate layers — a full architectural background under everything is expensive to draw.
Turn off coverage shading and spray patterns while you are drafting and back on when you check.
Help → Performance Tracker logs operations over 100 ms, so a specific slow command can be identified rather than guessed at.

Sending us the evidence

F12 is the main route and attaches everything for you — see Reporting a bug. Two extras exist for the awkward cases:

Ctrl+Shift+X (or Help → Create Repro Bundle) captures viewport screenshots, a state report and a project snapshot to %LOCALAPPDATA%\SprinkFlow\repro-bundles. Useful when you want to look at it yourself before deciding what to send.
Ctrl+Shift+D saves diagnostic screenshots of the viewport on their own.

Attach the folder to an email if the in-app send cannot reach us for some reason.