Error code 1 on tcp read

Hello,
I've been trying for quite some time to get a computer that acquires data and stores it to an array to send the data to another computer via TCP/IP using a crossover cable. The two computers send commands and information back and forth to each other using UDP, but to simplify things I wanted to use TCP/IP since the files are too large to be sent in one packet, and I don't want to worry about ensuring they're arriving in the proper order. Anyway, the connection opens fine, but I can't get any data through. At first I had no size specified on the read operation, so I thought that must be the problem, though neither of the computers experienced any errors despite the fact that the receiving computer received nothing. So when I realized I had forgotten to specify a size for the packet, I just created a constant for the purpose of testing the transfer. I created the constant by right clicking he size terminal and choosing create constant. Now when the code reaches this point in the code I get an error 1, and I'm not really sure why. Any ideas?
 Thanks,
-Steve

In the time I've spent debugging, I've been checking very carefully to ensure the connection isn't being closed (and that it's being opened), but I'll double check next time I get the chance. I highly doubt that Labview is releasing the connection on its own, because there are various connections to devices on the other computer that are kept the same way, and the code of the two machines is very similar.
As far as the details leading up to the error, basically there is an initialization state in the main code, which opens all the necessary connections. The code does not leave this state until the TCP connection has been established with the other computer. The code then sends commands to the other computer via UDP to either tell it to take data or to see if the data has been already taken. Once it has been detected that the data has been taken, the code tries to read the data over the TCP connection after sending the command to the other computer to send it. The other computer is receiving the send command, and seems to think that the data is being sent with no problems. The TCP connection is never closed until an exit button is clicked in the program.  So unless Labview is dropping the connection of its own accord while the other actions are being taken, connecting with the program and trying to use it to read data should be all that is necessary to generate the error.
I should get a chance to do more testing tomorrow, so I'll post what I come up with then. 
Thanks for the suggestions!
-Steve

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