That's it. I don't know the consequences of this error, apparently I could work normally. I removed the plugin and now everything seems fine.
This was the detailed error log.
<SDLErrorDetails time="18/09/2019 20:37:35">
<ErrorMessage>Version string portion was too short or too long.</ErrorMessage>
<Exception>
<Type>System.ArgumentException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
<ParamName />
<HelpLink />
<Source>mscorlib</Source>
<HResult>-2147024809</HResult>
<StackTrace><
at AppStoreIntegration.Service.PluginService.LatestPluginVersion(List`1 pluginVersions, Version localManifestVersion)
at AppStoreIntegration.Service.PluginService.<CheckForUpdates>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at AppStoreIntegration.AppStoreIntegrationInitializer.<OnStudioWindowCreated>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<>c.<ThrowAsync>b__6_0(Object state)]]></StackTrace>
</Exception>
<Environment>
<ProductName>SDL Trados Studio</ProductName>
<ProductVersion>15.0.0.0</ProductVersion>
<EntryAssemblyFileVersion>15.2.0.1041</EntryAssemblyFileVersion>
<OperatingSystem>Microsoft Windows 10 Pro</OperatingSystem>
<ServicePack>NULL</ServicePack>
<OperatingSystemLanguage>3082</OperatingSystemLanguage>
<CodePage>1252</CodePage>
<LoggedOnUser>PORTÁTIL\Ignacio</LoggedOnUser>
<DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
<ComputerName>PORTÁTIL</ComputerName>
<ConnectedToNetwork>True</ConnectedToNetwork>
<PhysicalMemory>24829456 MB</PhysicalMemory>
</Environment>
</SDLErrorDetails>