RAW previews disappeared Bridge V8.1

[GerZS]

Hello forum.
Since this morning my RAW previews have suddenly disappeared. I can empty the cache as often as I want, the thumbnails show no more images. Who has an idea what could be going on?
Cheers Gerhard

P.S. (I'm using Bridge 8.1 / don´t like Version 9)

[jbm007]

update your  Adobe camera raw app.

[GerZS]

Danke, ACR war bereits aktuell. Das Problem lag bei einem Windows Service Update. Nach einer Systemwiederherstellung funktionierte wieder alles.