diff --git a/app/igneum-app/src/engine.rs b/app/igneum-app/src/engine.rs
index 7b26e99d0..f0cb59163 100644
--- a/app/igneum-app/src/engine.rs
+++ b/app/igneum-app/src/engine.rs
@@ -4532,7 +4532,7 @@ mod tests {
         assert_eq!(super::power_control_after_prompt(&Err("the elevated step exited with code 2".into())), None);
     }
 
-    use super::{digest_from_line, parse_race, switches_of, sync_decision, Reading};
+    use super::{is_stall_exit, sync_decision_v2, digest_from_line, parse_race, switches_of, sync_decision, Reading};
 
     #[test]
     fn digest_comes_from_the_nodes_own_line_only() {
diff --git a/relay/playbooks/app-shot-light.ps1 b/relay/playbooks/app-shot-light.ps1
index 35e1502d2..5f5f81781 100644
--- a/relay/playbooks/app-shot-light.ps1
+++ b/relay/playbooks/app-shot-light.ps1
@@ -8,6 +8,7 @@ if (-not (Test-Path $urlFile)) { Write-Host "ERROR: $urlFile missing (is the app
 $url = (Get-Content $urlFile -Raw).Trim()
 $edge = @("$env:ProgramFiles (x86)\Microsoft\Edge\Application\msedge.exe", "$env:ProgramFiles\Microsoft\Edge\Application\msedge.exe") | Where-Object { Test-Path $_ } | Select-Object -First 1
 if (-not $edge) { Write-Host "ERROR: Edge not found"; exit 2 }
+Write-Host ("edge " + (Get-Item $edge).VersionInfo.ProductVersion + " at " + $edge)
 $out = Join-Path $env:TEMP 'igneum-shots'; New-Item -ItemType Directory -Force -Path $out | Out-Null
 # a profile of its own, or the launcher hands the request to the user's running Edge and returns at once with no file
 # (run-20261006-222112 on PC 2: both shots missing in 0 s); -Wait holds until the headless browser exits
@@ -15,9 +16,14 @@ $profile = Join-Path $out 'profile'; New-Item -ItemType Directory -Force -Path $
 foreach ($page in @('overview', 'cards')) {
   $png = Join-Path $out "igneum-$page-light-1440.png"
   if (Test-Path $png) { Remove-Item $png -Force }
-  $args = @('--headless=new', '--disable-gpu', '--hide-scrollbars', '--no-first-run', '--window-size=1440,1000', '--virtual-time-budget=8000', "--user-data-dir=$profile", "--screenshot=$png", "$url?page=$page&visible=1")
-  $p = Start-Process -FilePath $edge -ArgumentList $args -Wait -PassThru -WindowStyle Hidden
+  # take 3: the old headless mode (the new one wrote nothing on PC 2's Edge, exit 0 in 11 s); the screenshot path is
+  # passed bare, and the working directory is the output folder because old headless falls back to screenshot.png there
+  $args = @('--headless', '--disable-gpu', '--hide-scrollbars', '--no-first-run', '--no-sandbox', '--window-size=1440,1000', '--virtual-time-budget=8000', "--user-data-dir=$profile", "--screenshot=$png", "$url?page=$page&visible=1")
+  $errLog = Join-Path $out "edge-$page.log"
+  $p = Start-Process -FilePath $edge -ArgumentList $args -Wait -PassThru -WindowStyle Hidden -WorkingDirectory $out -RedirectStandardError $errLog
   $tries = 0; while (-not (Test-Path $png) -and $tries -lt 20) { Start-Sleep -Milliseconds 500; $tries++ }
+  if (-not (Test-Path $png) -and (Test-Path (Join-Path $out 'screenshot.png'))) { Move-Item (Join-Path $out 'screenshot.png') $png -Force }
+  if (Test-Path $errLog) { Get-Content $errLog | Select-Object -First 5 | ForEach-Object { Write-Host "edge: $_" } }
   if (Test-Path $png) { Write-Host "RESULT shot=$page bytes=$((Get-Item $png).Length) edge_exit=$($p.ExitCode)"; & $env:RELAY_SEND -TaskId ([long]$env:RELAY_TASK_ID) -Title "app $page light" $png } else { Write-Host "RESULT shot=$page missing edge_exit=$($p.ExitCode)" }
 }
 exit 0