# \[BUG-13112\] Build b2019031302 - Error launching project / navigating to any window: Error invoking \[LookupFunction\]

**URL:** <https://forum.inductiveautomation.com/t/bug-13112-build-b2019031302-error-launching-project-navigating-to-any-window-error-invoking-lookupfunction/23300>\
**Category:** Ignition Early Access\
**Created:** [March 13, 2019, 2:04pm UTC](https://forum.inductiveautomation.com/t/bug-13112-build-b2019031302-error-launching-project-navigating-to-any-window-error-invoking-lookupfunction/23300 "2019-03-13T14:04:58Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![pocewar](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pocewar/32/8186_2.png) [@pocewar](https://forum.inductiveautomation.com/u/pocewar)\
**Post date:** [March 13, 2019, 2:04pm UTC](https://forum.inductiveautomation.com/t/bug-13112-build-b2019031302-error-launching-project-navigating-to-any-window-error-invoking-lookupfunction/23300/1 "2019-03-13T14:04:58Z")

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Hi,

after installing latest build so far (b2019031302) when launching a project from Ignition Vision Client Launcher we now receive 68 instances of same error (on older builds we didn’t receive errors when launching project). First instance of the error is

Error invoking [LookupFunction]com.inductiveautomation.ignition.common.expressions.DefaultFunctionFactory$LookupFunction@717c824b.setType(class java.lang.String)

Details are:

SerializationException: Error invoking [LookupFunction]com.inductiveautomation.ignition.common.expressions.DefaultFunctionFactory$LookupFunction@717c824b.setType(class java.lang.String)  
caused by NoSuchMethodException: com.inductiveautomation.ignition.common.expressions.DefaultFunctionFactory$LookupFunction.setType(java.lang.Class)

Ignition v8.0.0-beta0 (b2019031302)  
Java: Azul Systems, Inc. 11.0.2

This error shows up every time we try to navigate to any window (number of instances of the error varies depending on the window)

Thanks in advance,

Carlos

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [March 13, 2019, 2:40pm UTC](https://forum.inductiveautomation.com/t/bug-13112-build-b2019031302-error-launching-project-navigating-to-any-window-error-invoking-lookupfunction/23300/2 "2019-03-13T14:40:00Z")

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Yep, looks like a bug. Thanks.

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**Author:** ![awalker](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/awalker/32/6874_2.png) [@awalker](https://forum.inductiveautomation.com/u/awalker)\
**Post date:** [March 14, 2019, 3:16pm UTC](https://forum.inductiveautomation.com/t/bug-13112-build-b2019031302-error-launching-project-navigating-to-any-window-error-invoking-lookupfunction/23300/3 "2019-03-14T15:16:14Z")

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This issue was fixed in the build that was uploaded today (3/14). Please let us know if you continue to see this behavior after upgrading.

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**Author:** ![pocewar](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pocewar/32/8186_2.png) [@pocewar](https://forum.inductiveautomation.com/u/pocewar)\
**Post date:** [March 14, 2019, 4:24pm UTC](https://forum.inductiveautomation.com/t/bug-13112-build-b2019031302-error-launching-project-navigating-to-any-window-error-invoking-lookupfunction/23300/4 "2019-03-14T16:24:37Z")

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Working now, thanks!