# My schematic in PLECS Blockset is not opening

**URL:** <https://forum.plexim.com/t/my-schematic-in-plecs-blockset-is-not-opening/835>\
**Category:** PLECS\
**Tags:** blockset\
**Created:** [August 18, 2020, 2:23pm UTC](https://forum.plexim.com/t/my-schematic-in-plecs-blockset-is-not-opening/835 "2020-08-18T14:23:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![wtaha](https://avatars.discourse-cdn.com/v4/letter/w/858c86/32.png) [@wtaha](https://forum.plexim.com/u/wtaha)\
**Post date:** [August 18, 2020, 2:23pm UTC](https://forum.plexim.com/t/my-schematic-in-plecs-blockset-is-not-opening/835/1 "2020-08-18T14:23:22Z")

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I have developed a model in PLECS Blockset, saved the file and closed it. When I came back to continue working on it, the PLECS circuit is now empty. I get the following error from PLECS Blockset when I open the Simulink model.

Model string, line 3359: syntax error before ‘’

Could not find schematic ‘filename here’ in string.

 ![PLECS issue.JPG](https://europe1.discourse-cdn.com/flex006/uploads/plecs/original/1X/b3c21b43f2396db94f145c245ab9d19c8eeacb0b.jpeg)

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**Author:** ![Manu\_Parimi](https://dub1.discourse-cdn.com/flex006/user_avatar/forum.plexim.com/manu_parimi/32/6_2.png) [@Manu\_Parimi](https://forum.plexim.com/u/Manu_Parimi)\
**Post date:** [August 19, 2020, 10:41am UTC](https://forum.plexim.com/t/my-schematic-in-plecs-blockset-is-not-opening/835/2 "2020-08-19T10:41:56Z")

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Hello,

To make sure this isn’t a license issue, please verify if you have a valid license. Go to the yellow PLECS model window, then click on Help -\> PLECS License Manager -\> Manage license files… You should see a license.lic file here.

If you also see a viewer license, remove this as stated here – [https://www.plexim.com/support/solutions/1008](https://www.plexim.com/support/solutions/1008).

Regards,Manu