# \#phoenix **URL:** https://forum.certara.com/tag/phoenix/1.md [Latest](https://forum.certara.com/latest.md) · [Categories](https://forum.certara.com/categories.md) · [Tags](https://forum.certara.com/tags.md) --- ## [Follow for Latest Phoenix release information](https://forum.certara.com/t/follow-for-latest-phoenix-release-information/3495)
**Author:** [@SimonDavis](https://forum.certara.com/u/SimonDavis)\ **Replies:** 24\ **Last updated:** [June 24, 2026, 10:17am UTC](https://forum.certara.com/t/follow-for-latest-phoenix-release-information/3495 "2026-06-24T10:17:55Z")
Hopefully everyone received the email yesterday announcing that 8.3 is now available; https://lp.certara.com/Download-Phoenix-8.3.html Once you install this you may look under the help menu to find the release notes an… --- ## [Phoenix Failed to create table: Could not load file or assembly, System.Data.SqlXml](https://forum.certara.com/t/phoenix-failed-to-create-table-could-not-load-file-or-assembly-system-data-sqlxml/4377)
**Author:** [@user3](https://forum.certara.com/u/user3)\ **Replies:** 0\ **Last updated:** [March 27, 2026, 8:49am UTC](https://forum.certara.com/t/phoenix-failed-to-create-table-could-not-load-file-or-assembly-system-data-sqlxml/4377 "2026-03-27T08:49:21Z")
Hi system, When I tried to run Phoenix’s built-in example file “C:\\Program Files (x86)\\Certara\\Phoenix\\application\\Examples\\Data and Plots\\Tables.phxproj”, it failed to run successfully. The “Warnings and Errors“ messag… --- ## [Question regarding Parameter Freezing for Simulation: Should I fix both Fixed and Random Effects?](https://forum.certara.com/t/question-regarding-parameter-freezing-for-simulation-should-i-fix-both-fixed-and-random-effects/4353)
**Author:** [@Virunya\_Komenkul](https://forum.certara.com/u/Virunya_Komenkul)\ **Replies:** 2\ **Last updated:** [January 20, 2026, 7:48am UTC](https://forum.certara.com/t/question-regarding-parameter-freezing-for-simulation-should-i-fix-both-fixed-and-random-effects/4353 "2026-01-20T07:48:01Z")
Hi everyone, I am currently working on a simulation step using my final PK/PD model in Phoenix NLME. I have a question regarding the best practice for “freezing” parameters before running the simulation. When transitio… --- ## [Pushing dictionaries to all users](https://forum.certara.com/t/pushing-dictionaries-to-all-users/4348)
**Author:** [@Awais\_Tahir\_Contract](https://forum.certara.com/u/Awais_Tahir_Contract)\ **Replies:** 2\ **Last updated:** [November 18, 2025, 11:22pm UTC](https://forum.certara.com/t/pushing-dictionaries-to-all-users/4348 "2025-11-18T23:22:49Z")
Hi Pinnacle 21 C Team. Can you please tell me the steps how we can make sure all users within the company are using same version of dictionaries? For example MedDRA, Is there a way to centrally install or make these dic… --- ## [Error on Phoenix](https://forum.certara.com/t/error-on-phoenix/4338)
**Author:** [@Chun\_Li](https://forum.certara.com/u/Chun_Li)\ **Replies:** 1\ **Last updated:** [October 23, 2025, 1:35pm UTC](https://forum.certara.com/t/error-on-phoenix/4338 "2025-10-23T13:35:31Z")
I have been using Phoenix for NCA and PK compartmental modeling and simulation. I have been running into the following error messages saying that “length can’t be less than zero. Parameter name: length”. This happen whe… --- ## [Seeking Advice: Implausible Vmax and Km from Michaelis-Menten Model for Oral Drug in Phoenix NLME](https://forum.certara.com/t/seeking-advice-implausible-vmax-and-km-from-michaelis-menten-model-for-oral-drug-in-phoenix-nlme/4228)
**Author:** [@Virunya\_Komenkul](https://forum.certara.com/u/Virunya_Komenkul)\ **Replies:** 1\ **Last updated:** [June 2, 2025, 1:18pm UTC](https://forum.certara.com/t/seeking-advice-implausible-vmax-and-km-from-michaelis-menten-model-for-oral-drug-in-phoenix-nlme/4228 "2025-06-02T13:18:31Z")
Dear all, I am currently developing a population pharmacokinetic (PopPK) model using Phoenix NLME, and I am relatively new to the platform. My goal is to describe the pharmacokinetics of an orally administered drug usin… --- ## [Box Plot Data Points Missing When Reordered](https://forum.certara.com/t/box-plot-data-points-missing-when-reordered/4171)
**Author:** [@Gabriel\_Wolfson](https://forum.certara.com/u/Gabriel_Wolfson)\ **Replies:** 5\ **Last updated:** [April 15, 2025, 4:15pm UTC](https://forum.certara.com/t/box-plot-data-points-missing-when-reordered/4171 "2025-04-15T16:15:18Z")
I’m trying to present individual PK parameter results from an NCA using a Box Plot object in Phoenix Winnonlin (build 8.5.0.6676). When x-axis group values are rearranged, some of the data points disappear, as in the ex…