# Columnar Backend: Data Preview takes much more time to display or never finishes **URL:** \ **Category:** Feedback & Ideas\ **Tags:** bug\ **Created:** [August 9, 2023, 4:16pm UTC](https://forum.knime.com/t/columnar-backend-data-preview-takes-much-more-time-to-display-or-never-finishes/71605 "2023-08-09T16:16:56Z")\ **Posts on this page:** 1\ **Showing post:** 8
**Author:** ![mwiegand](https://forum-cdn.knime.com/user_avatar/forum.knime.com/mwiegand/32/66896_2.png) [@mwiegand](https://forum.knime.com/u/mwiegand)\ **Post date:** [August 11, 2023, 11:07am UTC](https://forum.knime.com/t/columnar-backend-data-preview-takes-much-more-time-to-display-or-never-finishes/71605/8 "2023-08-11T11:07:33Z")
I tried to try the nighty build but ran into another issue I reported being caused by prev. Knime versions but this time it also struck for the latest: > [@Cannot launch prev. Knime 4.7.6](https://forum.knime.com/t/cannot-launch-prev-knime-4-7-6/71526/2): > > Update: I downloaded the most recent nighty build and the very same issue of not being able to start Knime appeared again. !SESSION 2023-08-11 12:53:58.416 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0\_371 java.vendor=Oracle Corporation BootLoader constants: OS=win32, ARCH=x86\_64, WS=win32, NL=en\_GB Command-line arguments: -os win32 -ws win32 -arch x86\_64 !ENTRY org.eclipse.equinox.simpleconfigurator 4 0 2023-08-11 12:53:58.926 !MESSAGE F… --- _[View the full topic](https://forum.knime.com/t/columnar-backend-data-preview-takes-much-more-time-to-display-or-never-finishes/71605)._