Hi experts,
I am trying to connect the network proxy to the downloaded dropbox server using the preference sub menu. However, I keep getting an error message that looks like this:

I don't know how to deal with this error. It works well with my laptop but my desktop always encounter this problem. Can you guys figure out what's happening? Thanks!
Error:
Error
Trouble connecting to Dropbox servers. Maybe your internet connection is down, or you need to set your http_proxy environment variable.
After installing 2 PCI-6225 in a single PC using NI-DAQmx drivers v. 8.5.0f5, the following error message showed up:
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It is happened only when my application is placed in the Windows Startup folder. Normally this application runs by default at start up and if I start it manually after closing the application, no problems occur. I thought reinstalling the DAQmx drivers and the Measurement Studio for VS2005 will work, but it won’t.
It is really a problem if it always starts automatically when I start the system.
I am looking forward to hearing from you soon regarding this problem and possible solutions.
I am trying to install Oracle version 10.2 on a Redhat 5.3. I am getting a error when installing it
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Any of your recommendations will be appreciated. Thank you. Best regards.

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I tried to convert my .docx file to .pdf but I get this error:
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