diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9726c5a..d5ff906 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@
 # diff-coverage-idea-plugin Changelog
 
 ## [Unreleased]
+### Fixed
+- fixed error on project open
+
+## [1.0.0]
 ### Added
 - Keep diff coverage configuration settings per IDE session
 - Added option to set up min coverage in run configuration
diff --git a/gradle.properties b/gradle.properties
index f4ea91f..2ba7e5e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,7 +3,7 @@
 
 pluginGroup = com.github.surpsg.diffcoverage
 pluginName = Diff Coverage
-pluginVersion = 1.0.0
+pluginVersion = 1.0.1
 pluginSinceBuild = 203
 pluginUntilBuild = 211.*
 pluginVerifierIdeVersions = 2020.3.2, 2020.3.3, 2021.1
diff --git a/src/main/kotlin/com/github/surpsg/diffcoverage/domain/CoverageSuiteBundleWithStat.kt b/src/main/kotlin/com/github/surpsg/diffcoverage/domain/CoverageSuiteBundleWithStat.kt
index 8048a2f..8ebd7a5 100644
--- a/src/main/kotlin/com/github/surpsg/diffcoverage/domain/CoverageSuiteBundleWithStat.kt
+++ b/src/main/kotlin/com/github/surpsg/diffcoverage/domain/CoverageSuiteBundleWithStat.kt
@@ -10,11 +10,11 @@ class CoverageSuiteBundleWithStat(suite: CoverageSuite) : CoverageSuitesBundle(s
             .map { it.getCoverageData(null) }
             .map { it as? ProjectDataWithStat }
             .filterNotNull()
-            .first()
-            .apply {
+            .firstOrNull()
+            ?.apply {
                 super.getCoverageData()?.let {
                     merge(it)
                 }
-            }
+            } ?: ProjectDataWithStat(CoverageStat(emptyMap()))
     }
 }
diff --git a/src/main/kotlin/com/github/surpsg/diffcoverage/listeners/ProjectOpenListener.kt b/src/main/kotlin/com/github/surpsg/diffcoverage/listeners/ProjectOpenListener.kt
index 515d1d7..312f2de 100644
--- a/src/main/kotlin/com/github/surpsg/diffcoverage/listeners/ProjectOpenListener.kt
+++ b/src/main/kotlin/com/github/surpsg/diffcoverage/listeners/ProjectOpenListener.kt
@@ -38,7 +38,7 @@ class ProjectOpenListener : ProjectManagerListener {
                 super.onSuccess(id)
                 if (id.type == ExternalSystemTaskType.RESOLVE_PROJECT) {
                     BACKGROUND_SCOPE.launch {
-                        project.service<PersistentDiffCoverageSettingsService>().reloadSettings()
+                        project.service<PersistentDiffCoverageSettingsService>().reloadSettings(true)
                     }
                 }
             }
diff --git a/src/main/kotlin/com/github/surpsg/diffcoverage/services/PersistentDiffCoverageSettingsService.kt b/src/main/kotlin/com/github/surpsg/diffcoverage/services/PersistentDiffCoverageSettingsService.kt
index f6e3860..06652df 100644
--- a/src/main/kotlin/com/github/surpsg/diffcoverage/services/PersistentDiffCoverageSettingsService.kt
+++ b/src/main/kotlin/com/github/surpsg/diffcoverage/services/PersistentDiffCoverageSettingsService.kt
@@ -29,27 +29,31 @@ class PersistentDiffCoverageSettingsService(private val project: Project) {
         }
     }
 
-    suspend fun reloadSettings(): Pair<DiffPluginInitializationStatus, DiffCoverageConfiguration> {
+    suspend fun reloadSettings(
+        silent: Boolean = false
+    ): Pair<DiffPluginInitializationStatus, DiffCoverageConfiguration> {
         return suspendCoroutine {
-            reloadSettingsWhenProjectInitialized(it)
+            reloadSettingsWhenProjectInitialized(silent, it)
         }
     }
 
     private fun reloadSettingsWhenProjectInitialized(
+        silent: Boolean,
         continuation: Continuation<Pair<DiffPluginInitializationStatus, DiffCoverageConfiguration>>
     ) {
         DumbService.getInstance(project).runWhenSmart {
             ExternalProjectsManager.getInstance(project).runWhenInitialized {
-                loadSettingsAsync(continuation)
+                loadSettingsAsync(silent, continuation)
             }
         }
     }
 
     private fun loadSettingsAsync(
+        silent: Boolean,
         continuation: Continuation<Pair<DiffPluginInitializationStatus, DiffCoverageConfiguration>>
     ) = BACKGROUND_SCOPE.launch {
         val configurationProvider = PersistentDiffCoverageConfigurationSettings.getInstance()
-        val diffCoverageSettings = project.service<DiffCoverageSettingsService>().obtainDiffCoverageSettings()
+        val diffCoverageSettings = project.service<DiffCoverageSettingsService>().obtainDiffCoverageSettings(silent)
         val result = if (diffCoverageSettings == null) {
             configurationProvider.setInitializationStatus(DiffPluginInitializationStatus.FAILED)
             DiffPluginInitializationStatus.FAILED to DiffCoverageConfiguration()
diff --git a/src/main/kotlin/com/github/surpsg/diffcoverage/services/gradle/DiffCoverageSettingsService.kt b/src/main/kotlin/com/github/surpsg/diffcoverage/services/gradle/DiffCoverageSettingsService.kt
index 5d24254..c742b3d 100644
--- a/src/main/kotlin/com/github/surpsg/diffcoverage/services/gradle/DiffCoverageSettingsService.kt
+++ b/src/main/kotlin/com/github/surpsg/diffcoverage/services/gradle/DiffCoverageSettingsService.kt
@@ -20,9 +20,9 @@ import java.io.File
 @Service
 class DiffCoverageSettingsService(private val project: Project) {
 
-    suspend fun obtainDiffCoverageSettings(): DiffCoverageConfiguration? {
+    suspend fun obtainDiffCoverageSettings(silent: Boolean = false): DiffCoverageConfiguration? {
         val gradleModule: GradleModule? = project.service<GradleDiffCoverageModuleService>()
-            .lookupDiffCoveragePluginModule()
+            .lookupDiffCoveragePluginModule(silent)
         return if (gradleModule == null) {
             null
         } else {
diff --git a/src/main/kotlin/com/github/surpsg/diffcoverage/services/gradle/GradleDiffCoverageModuleService.kt b/src/main/kotlin/com/github/surpsg/diffcoverage/services/gradle/GradleDiffCoverageModuleService.kt
index ae40aa5..a29b4cc 100644
--- a/src/main/kotlin/com/github/surpsg/diffcoverage/services/gradle/GradleDiffCoverageModuleService.kt
+++ b/src/main/kotlin/com/github/surpsg/diffcoverage/services/gradle/GradleDiffCoverageModuleService.kt
@@ -21,8 +21,8 @@ import java.nio.file.Paths
 @Service
 class GradleDiffCoverageModuleService(private val project: Project) {
 
-    fun lookupDiffCoveragePluginModule(): GradleModule? {
-        val diffCoverageModule = getDiffCoverageModule() ?: return null
+    fun lookupDiffCoveragePluginModule(silent: Boolean = false): GradleModule? {
+        val diffCoverageModule = getDiffCoverageModule(silent) ?: return null
 
         val rootModulePath = getRootModulePath()
         val diffCoverageModuleKey = normalizeModuleKey(rootModulePath, diffCoverageModule)
@@ -34,10 +34,11 @@ class GradleDiffCoverageModuleService(private val project: Project) {
             ?.let { GradleModule(diffCoverageModule, it.linkedExternalProjectPath) }
     }
 
-    private fun getDiffCoverageModule(): String? {
+    private fun getDiffCoverageModule(silent: Boolean): String? {
         val diffPluginAppliedTo: Map<String, Set<String>> = lookupDiffCoveragePluginModules()
         if (diffPluginAppliedTo.isEmpty() || diffPluginAppliedTo.first().value.isEmpty()) {
             project.service<BalloonNotificationService>().notify(
+                silent = silent,
                 notificationType = NotificationType.ERROR,
                 notificationListener = NotificationListener.URL_OPENING_LISTENER,
                 message = DiffCoverageBundle.message("no.diff.coverage.entries")
@@ -46,6 +47,7 @@ class GradleDiffCoverageModuleService(private val project: Project) {
         }
         if (diffPluginAppliedTo.size > 1 || diffPluginAppliedTo.first().value.size > 1) {
             project.service<BalloonNotificationService>().notify(
+                silent = silent,
                 notificationType = NotificationType.ERROR,
                 message = DiffCoverageBundle.message(
                     "multiple.diff.coverage.entries",
diff --git a/src/main/kotlin/com/github/surpsg/diffcoverage/services/notifications/BalloonNotificationService.kt b/src/main/kotlin/com/github/surpsg/diffcoverage/services/notifications/BalloonNotificationService.kt
index 2067d9b..808a206 100644
--- a/src/main/kotlin/com/github/surpsg/diffcoverage/services/notifications/BalloonNotificationService.kt
+++ b/src/main/kotlin/com/github/surpsg/diffcoverage/services/notifications/BalloonNotificationService.kt
@@ -17,8 +17,12 @@ class BalloonNotificationService(private val project: Project) {
         title: String = DiffCoverageBundle.message(PLUGIN_NAME),
         notificationType: NotificationType = NotificationType.INFORMATION,
         notificationListener: NotificationListener? = null,
-        message: String
+        message: String,
+        silent: Boolean = false
     ) {
+        if (silent) {
+            return
+        }
         Notifications.Bus.notify(
             getNotificationGroup().createNotification(
                 title,
diff --git a/src/main/resources/META-INF/plugin.xml b/src/main/resources/META-INF/plugin.xml
index ca4fb1c..f62fb3b 100644
--- a/src/main/resources/META-INF/plugin.xml
+++ b/src/main/resources/META-INF/plugin.xml
@@ -13,7 +13,7 @@
   ]]></description>
 
     <change-notes>Initial release of the plugin.</change-notes>
-    <version>1.0.0</version>
+    <version>1.0.1</version>
 
     <!-- Product and plugin compatibility requirements -->
     <!-- https://www.jetbrains.org/intellij/sdk/docs/basics/getting_started/plugin_compatibility.html -->