Since I bought the 2016 BIAB software, I hoped I could import all my MusicXML files. However most imports (99%) did start with the error:
"Could not convert variant of type (Null) into type (String) at: 00414A9C"

I figured out all major problems to solve this by updating all my 12000 files in a few batch runs by means of a "find and replace" program. It are always the same reasons why this error occurs. The BIAB import does not accept that anywhere in the MusicXML where a value is to be expected, the value is empty or equals a space. Example: if a lyrics text is to be expected like: <text>anything</text> but it looks like <text></text> or <text> </text> it will show this error.

So the next typical often missing info in MusicXML files did occur due to all kind of exported notation software using typical conversion processes which causes this. It should be noticed that this missing info in MusicXML files doesn't bother other importing software programs, but it is solely a typical BIAB import problem.

So I had to change the next MusicXML contents:
1. <creator type="poet"></creator> (replaced it by changing it into a comment )
2. <part-name></part-name> (replaced it by adding: Piano )
3. <instrument-name></instrument-name> (replaced it by adding: Piano )
4. <word></word> (replaced it by adding: . )
5. <text></text> (replaced it by adding: . )
6. <kind></kind> (replaced it by adding: major )
7. .....></credit-word> (replaced it by adding: . )

Searching with a "find and replace" batch file is a quick solution for this problem. You can start searching for: ></
Once you find these 3 characters, you know you will get this BIAB import error.
You cannot insert a space since the error will stay. So also > </ is not accepted.

Another problem involved is that the import process doesn't import the title of the songs, although it does import some text like composer and bottom text.
During exporting MusicXML it doesn't export title, composer or bottom text.

Last edited by robvh; 01/08/16 09:22 AM.
Musicians and music publishers are still wasting too much paper...come on men we live in the digitised age...Wake up!