Since this problem was initially discussed, the possibility to concatenate two continuous file was added to Brainstorm. You do not have to import the files first, you can directly select the two Link to raw file in the Process1 list, and run the process Standardize > Concatenate time.
I could not reproduce your error.
In order to help you with this issue, I need an example file in order to replicate the error on my compute.
Could you share a short example file that could can import into Brainstorm, but that you can't concatenate with itself (select the file twice in Process1 after linking it to the database).
If you need two files to reproduce the error, please share the two files. Make sure first that they have exactly the same channel names (the channel files created for both must look exactly similar)
- Upload the zipped file(s) some where
- Post the download link here
- Describe exactly how to reproduce your error with the Brainstorm interface, starting from the files you sent.
- Post a screen capture showing the two files in your Brainstorm database explorer