# Unexpected file format- HELP!

**URL:** <https://forums.sketchup.com/t/unexpected-file-format-help/87193>\
**Category:** Pro\
**Created:** [February 5, 2019, 8:40pm UTC](https://forums.sketchup.com/t/unexpected-file-format-help/87193 "2019-02-05T20:40:46Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![TheGuz](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/theguz/32/49361_2.png) [@TheGuz](https://forums.sketchup.com/u/TheGuz)\
**Post date:** [February 6, 2019, 4:43pm UTC](https://forums.sketchup.com/t/unexpected-file-format-help/87193/4 "2019-02-06T16:43:02Z")

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I wanted to verify that there are no .skb (backup) files anywhere on your computer. Here’s a post on places you might fine backup / autosave files: [Where Are Autosave Files?](https://forums.sketchup.com/t/where-are-autosave-files/13242)

Secondly, are you using SketchUp Pro (on the computer) or SketchUp for Schools (web browser based)?

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