Survey Data Collection Link error

[gory0401]

We use Survey Data Collection Link to convert our file formats, in this case it is a GPS job exported from a TSC2 using Trimble Survey Controller Version 12.46.  I exported the job from the data collector as a .csv file then use SDCL to convert the .csv into a .fbk file.  I am getting this error saying the file is invalid or in use.  We ran into this problem a couple months ago and it disappeared after a couple days, and now it has resurfaced.

Has anybody else ran across this error and possibly offer a solution?

Running Autocad Civil 3d 2012 with Service Pack 2, Windows 7 64-bit OS.

[rl_jackson]

That error could come from one of the point numbers having a point name (i.e. letters) the only way to fix it would be to go through the fbk file and locate the problem and fix it manually