Hi Krzysztof,
Hope you are keeping well.
For further investigation, we need some other information from your side. Kindly send one email to "support@safenet-inc.com" with below mentioned details:
1- Sentinel Envelope project file (.prjx) of protected application.
2- Are you facing this issue on single machine or multiple?
3- Programming language of application. Are you using Mixed mode application?
4- System info file from target machine.
5- For issue replication, we need unprotected/sample application for further troubleshooting.
6- Are you using Sentinel API's with your application?
Thank You,
Anubhav