Error during build: List index out of bounds (1)

[alibaba]

Hi,

I'm getting the message (see subject) during build. The last action is:
"Copied file <myfolder>\\.lock"

Has IA problems with such a file?

It seems that it is not a problem with this specific file because after their deletion I still get this error. What can cause it?

I deleted all files included in the setup and tried to build again but still the error appaers. The build dialog looks like this:

Built plug-in action Download File
Built plug-in action Download File
Built plug-in action (Un)Install MSI Setup
Error during build: List index out of bounds (1)

Anybody any idea?

[alibaba]

I finally found out what caused the error:

I deleted the file type extension line, generated by IA and it workes.

Strange...