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Questions tagged [intermittent]

Tags problems that aren't simply reproducable because they don't always occur.

119 questions
15
votes
8 answers

Copying Files over an Intermittent Network Connection

I am looking for a robust way to copy files over a Windows network share that is tolerant of intermittent connectivity. The application is often used on wireless, mobile workstations in large hospitals, and I'm assuming connectivity can be lost…
Eric Pohl
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11
votes
3 answers

Why is my Tomcat server throwing intermittent 404's when compiling JSP's?

I need help figuring out why a couple of my web applications are intermittently throwing 404 errors when trying to bring up a JSP. One of them has the JSP accessed directly and the other has a servlet that is forwarding to a JSP. The pages work…
Spiritis
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7
votes
6 answers

Intermittent Crystal Reports error "The request could not be submitted for background processing."

We are running Crystal Reports on a Windows Server 2008 with .NET framework 3.5 SP1. I have seen many causes of the general error "The request could not be submitted for background processing." on other forums, however they tend to be persistent…
Robert
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6
votes
2 answers

MATLAB GUIDE gui listbox intermittently disappears with seemingly obsolete error

I am building a straightforward MATLAB gui using GUIDE. I have a listbox of items. Most of the time, it works as expected, but sometimes (usually after I edit the figure with GUIDE) populating the listbox causes it to disappear, along with this…
eli
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6
votes
3 answers

HttpsURLConnection and intermittent connections

I'm hoping someone could help me out with intermittent connections I'm getting using code with HttpsURLConnection. The code I'm using is below: HttpsURLConnection conn = (HttpsURLConnection) url.openConnection(); …
OliverPank
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5
votes
1 answer

Intermittent 403s due to CSRF failure (Django 1.2.3)

I've got a slightly crazy/infuriating bug with a site and CSRF. We're running Django 1.2.3, Python 2.6 on Ubuntu with Apache2 + mod_wsgi and have been getting end users reporting 403 CRSF verification failures and 403s as a result. All our forms…
Steve Jalim
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5
votes
2 answers

Google App Engine with local Django 1.1 gets Intermittent Failures

I'm using the Windows Launcher development environment for Google App Engine. I have downloaded Django 1.1.2 source, and un-tarrred the "django" subdirectory to live within my application directory (a peer of app.yaml) At the top of each .py source…
Jon Watte
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4
votes
0 answers

Many responses from IIS are ending in OperationCanceledException resulting in 500 Internal server error

We have one problem in a Production environment but we don’t see any issues in the local DEV environments. Problem: I have one API - /api/GenerateAutoPdf/{Guid} (POST) Based on the response from this request we are opening a modal in the UI…
Varun
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4
votes
2 answers

Add months of zero demand to zoo time series

I have some intermittent demand data that only includes lines where demand is present. I bring it in via read.csv, and my 2 columns are Date (as date) and Quantity (as integer). Then I convert it to a zoo series and combine the daily demand into…
Matt C
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4
votes
2 answers

Flaky onSuccess of Future.sequence

I wrote this method: import scala.concurrent._ import ExecutionContext.Implicits.global import scala.util.{ Success, Failure } object FuturesSequence extends App { val f1 = future { 1 } val f2 = future { 2 } val lf = List(f1,…
Manuel Leduc
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4
votes
1 answer

Possible race condition creating Structs in ColdFusion

I've been seeing intermittent errors in a couple of systems I've been working on, when using the same methodology (not the same code) leading me to believe the problem may be linked to creating and using structs in the same request. I'm wondering if…
Gary Stanton
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3
votes
1 answer

CSS background image showing up intermittently in Google Chrome

This issue is driving me absolutely bonkers and I really appreciate any assistance! For some odd reason Chrome will sometimes not show the background images on a site I recently developed. I think it has something to do with a a Chrome cache issue…
DillonB
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3
votes
0 answers

Entity Framework GetManifestResourceStream fails intermittently

I am working on a WinForms application using EF 6.3 and .NET Framework 4.5.1. The application is compiled as X86 and running on different Win10 x64 machines. The application throws a XmlException intermittently. After including the source code of…
user957760
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3
votes
1 answer

os.makedirs() Occasionally Fails

I have a program that - on startup - checks to see if the user-supplied output directory exists. If the directory can not be found the program attempts to create it: if not os.path.exists(path): os.makedirs(path) Path is a standard absolute path…
jayce
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3
votes
3 answers

Getting strange intermittent "unrecognized selector" exceptions in iPhone app

Recently, I've been getting intermittent error reports from my app claiming "unrecognized selector" in areas that could not possibly cause them, and yet they do. For example, this one: Error: NSInvalidArgumentException: *** -[NSCFString…
Karl
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