generatic file I/O error not a valid labview file

[marten]

I've got a problem,

after a power down of my computer, i've tried to open my project...

But he won't he sais:"generic file i/o error    -  this file is not a supported labview file"

The extension of my file is *.llb and he won't open it, can anybody help me?

Kind regards,

Marten de Vries

[GerdW]

Hi marten,

this is a known "behaviour" of LV libraries. LLB were used when operating systems couldn't handle long filenames or exotic characters...
So the best advice is:
- don't use them anymore (or only for distribution purposes)
- get your backup copy and overwrite the malformed llb-file (You have some backups, do you?)
- look into your temporary folder (whatever is set in LV options) and look there for a llb-file of similar size, they are named something like uarcxxxx.llb. Copy that one back to your work folder and rename it with an useful name. Test if it contains the needed vis...

You can easily get the contents of the llb into directories using the vi lib manager in the tools menu!

[marten]

I don't have got a back-up (one of the earliest stage of my project, but it's almost like starting all over),

If I check the temp file, there is not a temp file of my application, so this won't work...

Do you got another option?

[GerdW]

Hi Marten,

two other options:
- Ask the guys at NI, they have a tool to read the vis from your malformed llb
- Search the forum, somewhere you can find this/a similar tool to do the reading on your own. Sorry, I don't know the link right now. The thread containing the vi is rather new...

Depending on the problem of your llb you may or may not be able to read the vi contained inside...

[marten]

Ok thanx for the reply, I will contact NI, and search this forum

I post the vi, if someone nows how to recover the file, be my guest..

Or if someone have got any other suggestions..

Kind regards,

Marten de Vries

[RikPrins]

Hi Marten,

I allready recieved you llb by email. It indeed seems like that there is some kind of corruption in the llb. I have tried the ways of recovering I have at my hands but unfortunatly I was not able to yet. I will ask R&D to take a look at it. Most of the times they can recover at least a portion of the llb. I will let you no by email if I succeeded.

Regards,

RikP - National Instruments Applications Engineering