# Error Opening Designer Project: FileNotFoundException

**URL:** <https://forum.inductiveautomation.com/t/error-opening-designer-project-filenotfoundexception/58655>\
**Category:** Ignition\
**Tags:** troubleshooting\
**Created:** [April 20, 2022, 11:16pm UTC](https://forum.inductiveautomation.com/t/error-opening-designer-project-filenotfoundexception/58655 "2022-04-20T23:16:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Ryan\_Flux](https://avatars.discourse-cdn.com/v4/letter/r/e47c2d/32.png) [@Ryan\_Flux](https://forum.inductiveautomation.com/u/Ryan_Flux)\
**Post date:** [April 20, 2022, 11:16pm UTC](https://forum.inductiveautomation.com/t/error-opening-designer-project-filenotfoundexception/58655/1 "2022-04-20T23:16:23Z")

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Hello,

When I go to open a Designer project, I get this error:

Error launching application:  
FineNotFoundException:  
C:\Users\username.ignition\cahce\resources\runtimes\11.0.14.1\bin\rmiregistry.exe

Like some other posts have suggested, I’ve tried deleting the entire .ignition folder under my username and reloading the project. It just reloads the files and comes up with the same error. Any thoughts?

![IgnitionDesignerError](https://us1.discourse-cdn.com/inductiveautomation/original/3X/2/c/2c7f13c9b0458b0ea65658d55b6d24dd9ad35e03.jpeg)

Here is a snippet from the error log:

```auto
Launch failed on step "DownloadRuntimeStep" with error:
java.io.FileNotFoundException: C:\Users\username\.ignition\cache\resources\runtimes\11.0.14.1\bin\rmiregistry.exe (The process cannot access the file because it is being used by another process)
	at java.base/java.io.FileOutputStream.open0(Native Method)
	at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298)
	at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:237)
	at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:187)
	at com.inductiveautomation.ignition.client.launch.steps.DownloadRuntimeStep.unzip(DownloadRuntimeStep.java:254)
	at com.inductiveautomation.ignition.client.launch.steps.DownloadRuntimeStep.downloadRuntime(DownloadRuntimeStep.java:206)
	at com.inductiveautomation.ignition.client.launch.steps.DownloadRuntimeStep$DownloadRuntimeAction.run(DownloadRuntimeStep.java:115)
	at com.inductiveautomation.ignition.client.launch.steps.DownloadRuntimeStep$DownloadRuntimeAction.run(DownloadRuntimeStep.java:82)
	at com.inductiveautomation.ignition.client.launch.steps.AbstractLaunchStep.runLockedAction(AbstractLaunchStep.java:95)
	at com.inductiveautomation.ignition.client.launch.steps.BaseStep.runLockedAction(BaseStep.java:21)
	at com.inductiveautomation.ignition.client.launch.steps.DownloadRuntimeStep.run(DownloadRuntimeStep.java:54)
	at com.inductiveautomation.ignition.client.launch.AbstractStepRunner.run(AbstractStepRunner.java:33)
	at java.base/java.lang.Thread.run(Thread.java:829)

```

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<div class="post-metadata">

**Author:** ![plo](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/plo/32/33875_2.png) [@plo](https://forum.inductiveautomation.com/u/plo)\
**Post date:** [April 20, 2022, 11:50pm UTC](https://forum.inductiveautomation.com/t/error-opening-designer-project-filenotfoundexception/58655/3 "2022-04-20T23:50:21Z")

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Hello Ryan, If you only deleted the C:\Users\username.ignition\cahce directory then relaunch the Designer. Would that work?

Do you know if that file is actually open/used by another process? Are you able to restart the PC in question and retry the above?

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<div class="post-metadata">

**Author:** ![Ryan\_Flux](https://avatars.discourse-cdn.com/v4/letter/r/e47c2d/32.png) [@Ryan\_Flux](https://forum.inductiveautomation.com/u/Ryan_Flux)\
**Post date:** [April 21, 2022, 1:31am UTC](https://forum.inductiveautomation.com/t/error-opening-designer-project-filenotfoundexception/58655/4 "2022-04-21T01:31:20Z")

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Hi plo,

I just tried deleting only the cache directory and have restarted the machine. Still the same error. So far, I haven’t found that this file is open elsewhere. I tried digging into the Task Manager to see if anything related was running, but did not see anything.

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<div class="post-metadata">

**Author:** ![plo](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/plo/32/33875_2.png) [@plo](https://forum.inductiveautomation.com/u/plo)\
**Post date:** [April 21, 2022, 3:25pm UTC](https://forum.inductiveautomation.com/t/error-opening-designer-project-filenotfoundexception/58655/5 "2022-04-21T15:25:05Z")

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Hello Ryan, At this point, I would suggest reaching out to Support for additional troubleshooting and review. You can reference this forum post in your Support Ticket. [Support Home Page | Inductive Automation](https://inductiveautomation.com/support/home/)

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<div class="post-metadata">

**Author:** ![Ryan\_Flux](https://avatars.discourse-cdn.com/v4/letter/r/e47c2d/32.png) [@Ryan\_Flux](https://forum.inductiveautomation.com/u/Ryan_Flux)\
**Post date:** [April 21, 2022, 5:49pm UTC](https://forum.inductiveautomation.com/t/error-opening-designer-project-filenotfoundexception/58655/6 "2022-04-21T17:49:20Z")

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Just opened the ticket. Thanks for the help.