File Read Error/ Network Error on Drive G:

[Clayton Hall]

Occasionally, for no apparent reason, our Fox26 invoicing application gets
a network error. On Win9x machines, the error is Network Error on Drive (Letter
of Mapped Drive):. After noticing that the developement staff, which runs
NT4 Workstation, never seemed to get these errors we upgraded several machines
to NT. Sure Enough, the error went away but was replaced with Error 1104
File Read Error.
I think maybe there is a problem with network traffic or maybe the redirector
is timing out. We have tried replacing our APPEND BLANKS with inserts, LOCATEs
with SEEKs,upgrading the network to 100megabit,turning off Redirector File
Caching in the registry, but nothing seems to work.
If you have a solution, or just a new idea, please email me.

[Fred Taylor]

It sounds like the problem when the development was done on a machine other
than on the C: drive, (like D:) and that drive D: on the machine you are now
trying to run it on is a CD or some other removable drive with no media in
it.

Quick fix:
Put a CD or a cartdidge in the drive.

Better fix:
Find all references in your project that may contain a reference to other
than drive C: and replace them.

I do believe there is a FAQ about this at www.universalthread.com. You have
to sign up, but membership is free.

Fred

Clayton Hall wrote in message <38d68eed$1@news.devx.com>...
>
>Occasionally, for no apparent reason, our Fox26 invoicing application gets
>a network error. On Win9x machines, the error is Network Error on Drive
(Letter
>of Mapped Drive):. After noticing that the developement staff, which runs
>NT4 Workstation, never seemed to get these errors we upgraded several
machines
>to NT. Sure Enough, the error went away but was replaced with Error 1104
>File Read Error.
>I think maybe there is a problem with network traffic or maybe the
redirector
>is timing out. We have tried replacing our APPEND BLANKS with inserts,
LOCATEs
>with SEEKs,upgrading the network to 100megabit,turning off Redirector File
>Caching in the registry, but nothing seems to work.
>If you have a solution, or just a new idea, please email me.

[Guy Pardoe]

I have seen similar inconsistent failures in 3 or 4 different
companies. Every time I've seen this, it was network infrastructure
problems. It always involved Novell. And it always involved 3Com
auto-sensing hubs. (Maybe a coincidence?)

Changing hubs solved the problems in every case.

I am not a network specialist, so I cannot explain why this occurred
or why changing the hubs made a diference. But a network admin in one
of the companies told me that sometimes the 3Com autosensing hubs get
into conflict with 10/100 autosensing cards on the PCs.

To be sure, from my point of view, that's hearsay. But take it for
what it's worth.

Guy




On 20 Mar 2000 12:49:49 -0800, "Clayton Hall"
<claytonh@lifeplususa.com> wrote:

>
>Occasionally, for no apparent reason, our Fox26 invoicing application gets
>a network error. On Win9x machines, the error is Network Error on Drive (Letter
>of Mapped Drive):. After noticing that the developement staff, which runs
>NT4 Workstation, never seemed to get these errors we upgraded several machines
>to NT. Sure Enough, the error went away but was replaced with Error 1104
>File Read Error.
>I think maybe there is a problem with network traffic or maybe the redirector
>is timing out. We have tried replacing our APPEND BLANKS with inserts, LOCATEs
>with SEEKs,upgrading the network to 100megabit,turning off Redirector File
>Caching in the registry, but nothing seems to work.
>If you have a solution, or just a new idea, please email me.

Guy Pardoe
Pardoe Development Corporation

[Lorne Klassen]

I have a VFP app running on a network drive (NT server and workstations) and
we used to get random "Error Reading File" errors. It seems that the network
connnection is lost for an instant (for unknown reasons). Foxpro really seems
to hate this. I've given up trying to find the cause but since we've moved
the app to a new server the problem has pretty much gone away. I would like
to find a graceful way of exiting when this error occurs. QUIT doesn't work
- Foxpro refuses to exit and we have to use Windows task manager.

"Clayton Hall" <claytonh@lifeplususa.com> wrote:
>
>Occasionally, for no apparent reason, our Fox26 invoicing application gets
>a network error. On Win9x machines, the error is Network Error on Drive
(Letter
>of Mapped Drive):. After noticing that the developement staff, which runs
>NT4 Workstation, never seemed to get these errors we upgraded several machines
>to NT. Sure Enough, the error went away but was replaced with Error 1104
>File Read Error.
>I think maybe there is a problem with network traffic or maybe the redirector
>is timing out. We have tried replacing our APPEND BLANKS with inserts, LOCATEs
>with SEEKs,upgrading the network to 100megabit,turning off Redirector File
>Caching in the registry, but nothing seems to work.
>If you have a solution, or just a new idea, please email me.