# PYNQ error with trace\_cntrl\_32 **URL:** \ **Category:** Support\ **Created:** [March 29, 2022, 1:19pm UTC](https://discuss.pynq.io/t/pynq-error-with-trace-cntrl-32/3923 "2022-03-29T13:19:23Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![laserbeam](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/laserbeam/32/2965_2.png) [@laserbeam](https://discuss.pynq.io/u/laserbeam)\ **Post date:** [March 30, 2022, 8:12am UTC](https://discuss.pynq.io/t/pynq-error-with-trace-cntrl-32/3923/4 "2022-03-30T08:12:59Z")
Hello everyone, so the build process now goes on until I encounter this error : ```auto Attempting to get a license for feature 'Implementation' and/or device 'xczu7ev' INFO: [Common 17-349] Got license for feature 'Implementation' and/or device 'xczu7ev' INFO: [Common 17-83] Releasing license: Implementation 41 Infos, 0 Warnings, 0 Critical Warnings and 1 Errors encountered. write_bitstream failed ERROR: [Common 17-69] Command failed: This design contains one or more cells for which bitstream generation is not permitted: base_i/video/hdmi_out/frontend/inst/v_hdmi_tx/inst () base_i/video/hdmi_in/frontend/inst/v_hdmi_rx/inst () If a new IP Core license was added, in order for the new license to be picked up, the current netlist needs to be updated by resetting and re-generating the IP output products before bitstream generation. ``` I guess this is pretty self-explainatory : I do not have the HDMI-IP on my machine. Is there a way to circumvent this (e.g. disable HDMI outputs), except requesting a trial license (as specified [here](https://discuss.pynq.io/t/building-pynq-base-from-source-targeting-zcu104-board/262/2) ) ? --- _[View the full topic](https://discuss.pynq.io/t/pynq-error-with-trace-cntrl-32/3923)._