Regarding your previous suggestions, I have tried everything but the issue remains unresolved:
Files Installed: The files you mentioned are already correctly installed.
Cross-Check: I even tried copying and pasting the files from another computer where the software works normally.
Update: I have upgraded the version to the latest one available.
Despite all these steps, the same problem occurs. I am completely unable to use AccuLips on my computer equipped with an RTX 5090.
This might seem like a minor bug, but it is a critical issue for my workflow. Please investigate this matter seriously and provide a solution. 
Hi cwalcwal1 Thank you very much for your assistance. We would also kindly ask for your assistance in confirming whether these two files are present in the following path on both of your computers. Reallusion\iClone 8\Resource\ICTextToSpeech\Dictionary\en.dict Reallusion\iClone 8\Resource\ICTextToSpeech\montreal-forced-aligner\pretrained_models\german_prosodylab.zip If the files are not found, we would kindly ask you to either try reinstalling iClone or copy these files from your other computer where the software is working properly. This will help us further verify and narrow down the issue. Kayla Reallusion
Hi cwalcwal1 Thank you for your assistance. To help us further clarify the issue, we would like to kindly ask for your help with one more thing. We would like to request the file you are using, if you don’t mind assisting us. If possible, please attach it in your next reply. If you prefer not to let others see it, you can set it as a private message. When attaching the files, kindly separate the Project and the audio file into different folders. Kayla Reallusion
Hi cwalcwal1 Thank you for your reply. We have recently used AccuLips on the 5090, and it worked properly. However, we will still help you resolve the issue. We would like to kindly ask for your assistance in providing your system information, as it will help us analyze the problem. Here is the link with instructions on how to do it — please provide the information in your next message. https://www.reallusion.com/FeedBackTracker/Home/HowToGet KaylaYang Reallusion