WL13 file opening and rendering issues

Hello,

since I installed WL13 I had some problems.

The first I noticed was when I sent a file to edit from Nuendo (edit in Wavelab and edit after bounce): Wavelab open but no file shows for editing. To correctly open the file, Wavelab must be already running.

The second (and most annoying one): when I render the file the first 5 or 6 seconds are corrupted (like a filter would gradually open).

To workaround this problem I always have to duplicate the wave then delete the first part after rendering. The picture shows the process jut before I delete the first part; they were the same wave duplicated.

I noticed the problem showed up since I started to use some McDSP Plugins, but it also happened in WL 12 with other plugins.

Do I make something wrong?

Thanks in advance

Dario

PS. MacOsX 15.7.4 - Nuendo 14.0.41 - Wavelab 13.0.10