error 7 in "application builder" for LabVIEW 8.5.1

I am getting an error while building a project for making EXE file.
below is the displayed message.
Error 7 occurred at Copy in New 
============================NI-488: Non-existent GPIB interface.
C:\ProgramFile\NationalInstruments \LabVIEW8.5\vi.lib\Utility\libraryn.bin
x9561 (148438)
7/2/2008 7:10:05 AM
comp.lang.labview 35210 articles. 1 followers. vasusachin24 (1) is leader. Post Follow

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You can force LabVIEW to recompile the entire VI hierarchy in your project with CTRL+SHIFT+Run Button.
Have you imported some old VI's into the project?  From a previous version?
Did you add files since creating the build parameters?  You may want to delete the build parameters and create a new one.
RayRMessage Edited by JoeLabView on 07-02-2008  08:35 AM
x9561 (148438)
7/2/2008 12:40:07 PM
Also, check the path of the reported missing file and make sure it really isn't missing.
x9561 (148438)
7/2/2008 12:40:08 PM
Thanks George...  :)
Especially if code moved around (Copy / Paste to another folder / backup, etc..)
x9561 (148438)
7/2/2008 1:10:07 PM
Thanks Ray and George,
I was using VIs of 7.1 version for 8.5 builder. 
I deleted the previous build parameters and created a new one, it was sucessful.
x9561 (148438)
7/3/2008 5:40:06 AM
Glad it worked.. :)
x9561 (148438)
7/3/2008 12:40:08 PM

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&quot;re-entrant&quot; &quot;file I/O&quot; &quot;QSM_State Machines&quot;
&nbsp; &nbsp; I have trouble with writing (appending) to text file in a QSM that is in an "occurence mode" of operation whereby the queue waits for outside engueue to go ahead and do a task. The task is simply to write to a file a line of text. &nbsp; Outside producers give the queue its go ahead and data is sent along etc... &nbsp; WHat I am seeing in the logging functions are multiple errors (Error 1) Somehow Labview&nbsp;is not noticing that the reference is valid or it is invalidating the reference. &nbsp; Q is Should I just let the QSM loop to keep it alive and would that work? &nbsp; What is the rule concerning queue waiting for an event? Does the VI get flagged as idle and is that why the ref appears to be dropped?&nbsp; THere is no reason I can think of for the ref to be dropped. It is opened in the init frame then kept in a shift register. and available at each iteration in the QSM. &nbsp; The example works in a simple loop but not a loop that is waiting on an occurence.&nbsp; Why? &nbsp; The only work around I can manage is to use the path and open the reference when it is not valid which feels kind of&nbsp; silly if you get my drift &nbsp; Anyone seen this before? &nbsp; Thank You &nbsp; &nbsp; &nbsp; ...

Error -50150 &quot;Cascade Failure&quot;: LabVIEW Bug?
Hello, &nbsp; I'm new to the forums here, so I apologize in advance for breaches of etiquette or various other newbie actions. ;) &nbsp; While using the DAQmx Create Channel VI in conjuction with my own custom unit scale, I keep running into a -50150 error for various combinations of slope and y-intercept. I've pared my problem down to the attached VI. As you can see, I'm setting up the linear scale with a slope and y-intercept, and then scaling the original +/- 10V range for&nbsp;an appropriate&nbsp;maximum and minimum. Upon running this VI as-is, I get the -50150 "cascade failure" error. However, changing the y-intercept value to an arbitrarily different value, say 6, causes the program to run fine. &nbsp; I've noticed that other combinations of slope-intercept also crash the program, and that these combinations usually have a pattern. For example, the (m, b) combinations of &nbsp; (100,5); (100,20); (100,30); (100,45); (100,55); (100,70); and so on, with the 10-15-10-15 pattern repeating &nbsp; cause the program to throw -50150 as well. I have not found any values of the y-intercept that cause the program to crash that are not&nbsp;multiples of 5 (although obviously I cannot say conclusively that there are none). I realize that it is all very well for me to claim that this is a software bug and not my fault, but I cannot see any good reason for this to be happening in such an odd way. &nbsp; I am running LabVIEW...

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