error: Undefined symbol '_NewAsyncTimer@24' referenced in "f:\程序 CVI - 副本 2 - 副本\cvibuild.test_face\Release\test_face.obj".

[232356]

It was originally a program that could be run. After copying it to a new computer, it appeared when compiled, and the compilation failed.

[RobertoBozzolo]

It seems the asynchronous timer instrument is not loaded when you compile your project.

The instruments like that can either be loaded in Instrument menu or in Library menu: while in the first case the choice is remembered in the project, in the latter case this is not true and this may be your problem. Check the original machine and look after the Async Timer instrument, then reply this setting in the second machine and all should begin working again.

[NIRest · Accepted solution]

Hi,

One possibility would be the async timer library not located correctly in the new computer. You might need to add the async timer library to your environment.

Try to resolve it by:

1. Going to Library->Customize in LabWindows/CVI
2. Browsing for the asynctmr.fp file (for example, normally located at C:\Program Files (x86)\National Instruments\CVI2017\toolslib\toolbox) and adding it to the user libraries
3. Restarting LabWindows/CVI.

[NIRest]

Hi,

One possibility would be the async timer library not located correctly in the new computer. You might need to add the async timer library to your environment.

Try to resolve it by:

1. Going to Library->Customize in LabWindows/CVI
2. Browsing for the asynctmr.fp file (for example, normally located at C:\Program Files (x86)\National Instruments\CVI2017\toolslib\toolbox) and adding it to the user libraries
3. Restarting LabWindows/CVI.